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{{Characterbox
 
{{Characterbox
 
|name = X.A.N.A.
 
|name = X.A.N.A.
|image = [[File:Eye of X.A.N.A..png|200px]]
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|image = [[File:XANASVG.svg|200px]]
 
|role = Main Antagonist
 
|role = Main Antagonist
 
|first = ''[[X.A.N.A. Awakens]]'' (chronologically)<br />''[[Teddygozilla]]'' (production)
 
|first = ''[[X.A.N.A. Awakens]]'' (chronologically)<br />''[[Teddygozilla]]'' (production)
 
|engvoice = [[David Gasman]]
 
|engvoice = [[David Gasman]]
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}}
|laactor = N/A}}
 
{{Quote|"''HAHAHAHAHA, YOU ARE GOING TO DIE! HAHAHAHA!''"|X.A.N.A., physical form in ''[[Ghost Channel]]''}}
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{{Quote|"''HAHAHAHAHA, YOU ARE GOING TO DIE! HAHAHAHA!''"|X.A.N.A. itself speaking to the Lyoko Warriors in ''[[Ghost Channel]]''}}
{{Quote|"''A super dangerous program, like a virus, which can control electricity. And it activates towers on Lyoko to gain access to your world.''"|Aelita about the malevolent artificial intelligence in ''[[X.A.N.A. Awakens, Part 2]]''}}
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{{Quote|"''A multi-agent computer program I created. It has achieved self-awareness and autonomy, and it's trying to eliminate us now.''"|[[Waldo Schaeffer|Franz Hopper]] explaining to [[Aelita Schaeffer|his daughter]] about how he created X.A.N.A. in [[Aelita]].}}
   
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'''X.A.N.A.''' (or simply '''XANA''') is the main antagonist of [[Code Lyoko]].
'''X.A.N.A. '''(or simply '''XANA''') is the main antagonist of [[Code Lyoko|the entire franchise]] and the sworn enemy of the[[Lyoko Warriors| Lyoko Warriors]]. It is a sentient and dangerous multi-agent system that inhabits the Factory [[Supercomputer]] and controls the virtual world of [[Lyoko]]. X.A.N.A.'s primary directive is world domination and to eliminate the obstacles who stand in its way, the Lyoko Warriors.
 
   
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It is an artificially intelligent multi-agent computer program created by [[Waldo Schaeffer]] in order to destroy [[Project Carthage]], but its power and intelligence grew thanks to the Supercomputer's [[Return to the Past|Time Reversion]], allowing it to gain consciousness and grow hostile towards its creator and humanity as a whole, changing its purpose to conquering the world.
After its supposed destruction, X.A.N.A. managed to miraculously survive through the[[Cortex (Replika)| Cortex]], becoming even stronger than before in ''[[Code Lyoko Evolution]]''.
 
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Waldo shut down the [[Supercomputer]] after realizing how corrupted his creation became but after a decade, was reactivated and seeks to destroy the [[Lyoko Warriors]] to prevent them from trying to destroy it by escaping the Supercomputer and infecting the global network. Despite succeeding in this and killing its creator, X.A.N.A. finally met its end when [[Jeremie Belpois]] activated [[Anti-X.A.N.A. Program|his own multi-agent system]] designed to destroy all of XANA's [[Replikas]] and succeeding in eradicating the hostile program once and for all.
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'''In the non-canon continuity''', '''''[[Code Lyoko Evolution]]''''', X.A.N.A. instead returned by infecting another virtual world known as the [[Cortex]] and planned to recover the [[Source Codes|source codes]] that it hid inside of [[Aelita Schaeffer]], [[Ulrich Stern]], [[Yumi Ishiyama]] and [[Odd Della Robbia]], in order to regain control of the network again. However, after deactivating both the Cortex and Lyoko again before X.A.N.A. could regain all of its source code, the Lyoko Warriors succeeding in once again destroying XANA, with no chance of return.
   
 
==Appearance==
 
==Appearance==
 
[[File:Xana.JPG|thumb|left|X.A.N.A.'s true form in ''[[Fight to the Finish]]''.]]
 
[[File:Xana.JPG|thumb|left|X.A.N.A.'s true form in ''[[Fight to the Finish]]''.]]
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X.A.N.A. is a computer program that has neither physical or digital form. It keeps an unseen presence inside Lyoko's systems and generates [[Pulsations|red, pulsating energies]] that run through the [[Lyoko Wires]] when activating a Tower. The [[Specter|specters]] it manifests into the real world are black, ghostly entities that are extensions of its multi-agent system and are the closest thing it has to physical existence.
As a highly-sophisticated multi-agent system, X.A.N.A. has a stealthy form which has become more mysterious and unnatural. When it does reveal its presence, the program uses [[Pulsations|pulsating energies]] to spread its connection from [[Lyoko Wires|the Lyoko Wires]] to the real world and [[Eye of X.A.N.A.|its Eye]] will appear on any chosen device screen. However, its spectres seem to be its only physical form as it has an incredible processing power and they have the same look: Grey Silhouettes with a more swirly eye at the chest. When the spectres show themselves in the real world, X.A.N.A. is able to manipulate solid matter and in [[Fight to the Finish|the penultimate episode]], the program had a more malleable look which demonstrates its shape-shifting appearance.
 
   
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[[File:XANA.png|thumb|140x140px|XANA's only physical appearance]]
In ''[[Ghost Channel]]'', X.A.N.A. required a perfect physical yet digital form to deceive its enemies and thus it chose Jeremie's form. However, when it was exposed and denied the truth, it changed with its standard shape-shifting features to a demonized version of the teenager, which it had claws, blanked eyes with energy constantly flowing outwards as well as an aura.
 
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X.A.N.A.'s only real incarnation was in ''[[Ghost Channel]]'', masquerading as Jeremie inside a Simulation Bubble meant to imprison Ulrich, Yumi and Odd. It manifested its presence into a monstrous caricature figure of Jeremie, with sharp nails, spiky hair, white glowing eyes and an unnatural aura. In ''[[The Key]]'', X.A.N.A. appeared in the form of a massive, whirling specter escaping the Supercomputer above the factory. But the closest thing to a real appearance was in ''[[Fight to the Finish]]'', while X.A.N.A. was being destroyed everywhere in the Digital Sea by Jeremie's multi-agent antivirus, the specter that was possessing William was forced out and became a giant entity with its eye symbol on the chest, screaming in agony before it disappears.
 
When it had possessed William on Lyoko and even gained additional power from the Core of Sector Five, it used the vast energies to permanently bind itself to his avatar and used its power to transform it into a darker version which the program could now see and act more like the Lyoko Warrior.
 
   
 
==Personality==
 
==Personality==
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X.A.N.A. is an psychopathic, hostile and semi-sentient Artificial Intelligence based on a multi-agent system that is solely bent on world domination. It is incredibly intelligent, able to calculate attacks and schemes, build advanced technology, even predict behavior patterns to use to its advantage. However, it can only know theories and logical patterns due to its innate nature as a machine. X.A.N.A. can easily understand base emotions like anger, fear, jealousy, and desire, but is unable to grasp the complex nature of love, compassion, and friendship.
X.A.N.A. is a powerful computer program that developed self-awareness and autonomy, but has turned chaotic, evil, and destructive. It uses Lyoko's capabilities to launch attacks on humanity and its enemies, and takes any opportunity to weaken or eliminate the latter. X.A.N.A. also greatly wants to stay alive, trying to keep the Supercomputer online while still bound to it, and how it tries hard to get rid of threats and enemies. It also wants to eliminate Franz Hopper, the person who created it and Lyoko, thus; is the enemy it fears the most.
 
   
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As specters on Earth, X.A.N.A. displays its true self. It acts normal to avoid attention, calculating when working to fulfill schemes, and is hostile, ruthless, and sadistic when attacking. It has also displayed arrogance, mocked its enemies, and shown begrudging respect on rare occasion.
As X.A.N.A. grows smarter with every time reversion, it focuses its attacks mostly on the Lyoko Warriors, and can think of greater schemes and ambitions beyond mere survival and random attacks. It desires power and to conquer the world, and the [[Keys of Lyoko|Keys to Lyoko]] are the means towards that end. In its possession, X.A.N.A. can escape into the world network and create Replikas inside of other supercomputers, in order to take over military bases and facilities in the real world. With X.A.N.A.'s knowledge of advanced science and technology, it intends to use the facilities for a secret plan to build weapons and powerful robot armies under its control to destroy humanity and conquer the world.
 
   
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As the series progresses, its power, intellect, and motives evolve and become more complex. At first, X.A.N.A. launches random attacks on its enemies (most likely to force more time reversions to launch and increase its power), while keeping the Supercomputer online to survive. As it grows in power, X.A.N.A. figures out how to escape the confines of the Supercomputer and into the world network, by stealing the Keys to Lyoko from Aelita's memory. Once it succeeds, X.A.N.A. infects other supercomputers around the world in order to build weapons and robot armies to take over the Earth, while working to destroy Lyoko and kill [[Waldo Schaeffer|Franz Hopper]] in addition to fighting the team to eliminate all of its obstacles.
As a program, X.A.N.A. is driven only by logical calculations and will never truly comprehend feelings, even though it gets better at taking advantage of them as it evolves. X.A.N.A. doesn't have much of a personality, but eventually develops emerging qualities in its few incarnations, mostly demonic and violent behavior, but it is also manipulative, egomaniacal, and even lustful. Others include a sadistic sense of humor, respect for worthy enemies, and getting angry at failures and mistakes.
 
   
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As a program, X.A.N.A. is a logical entity despite its extremely chaotic nature, acting only for its own benefit. It was determined to keep the Supercomputer online to survive before its escape and helped the team destroy the [[Marabounta (monster)|Marabounta]], but only to keep Aelita's memory intact and save itself from the monster. Also, the team have used its own logical nature against it more than once, making it thwart its own plans by threatening things it values, such as in [[Hot Shower]], where Aelita has Odd devirtualize her in order to give X.A.N.A. an ultimatum: either it allows the Supercomputer to be destroyed along with Aelita whom it desired to capture alive or destroy the meteorite threatening her and the Supercomputer, thus resulting in X.A.N.A. forfeiting its plan.
X.A.N.A. is pragmatic; not willing to take actions or fight battles without something to gain, nor risk eliminating vital parts in its long-term plans, like [[Aelita]] for most of the series. X.A.N.A. would also join enemies to fight a [[Marabounta|bigger threat]] to survive. After it escaped the Supercomputer, it tries to destroy the machine to get rid of the Lyoko Warriors' only way of fighting against it, having no further need for the machine anymore.
 
   
==Character Relationships==
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==Relationships==
 
===[[Lyoko Warriors]]===
 
===[[Lyoko Warriors]]===
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The Lyoko Warriors are X.A.N.A.'s mortal enemies, thwarting its attacks at every turn. It considers them to be troublesome obstacles and attacks them relentlessly, would take any chances to get rid of them, and has no qualms about using them as tools at the same time. X.A.N.A. also has different views of each and every one of them:
Since the rest of humanity is unaware that X.A.N.A. exists, it has determined the Lyoko Warriors as Enemy #1. However, it has made separate opinions to describe each of their positions as a threat to its plans:
 
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*'''[[Jeremie Belpois]]''': As he found the Supercomputer and Aelita first, X.A.N.A. sees Jeremie as its largest threat and it knows that he would eventually become as smart and devoted to its creator's work. As a fact that Jeremie has potential to win without an avatar, X.A.N.A. sometimes knows that he is a problem and intelligent enough to outsmart it. Also, the program has the most respect for him such as when it copied his appearance as a spectre saying it was "almost proud to resemble him".
 
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*'''[[Jeremie Belpois]]''': X.A.N.A. targets Jeremie the most out of everyone since he is the only one who can use the lab interface and because it sees him as the source of the group's leadership. It believes that he is the reason for their high success rate. When X.A.N.A. made a clone of him, it remarked that it "was almost proud to resemble him", showing a begrudging respect for the brains of the group due to his high intellect.
*[[Aelita Schaeffer|'''Aelita Schaeffer''']]: Since she is her creator's daughter and it was told to protect her, X.A.N.A. had a different goal in mind and that was to dominate over her position and when it realized that she was becoming too big of a risk to its plans, it implanted a virus to make sure that if it goes out for good once the supercomputer is shut down, she will too. It mainly has a major interest in her abilities so it hunts her down.
 
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*[[Aelita Schaeffer|'''Aelita Schaeffer''']]: She is the only one out of the group who can deactivate its Towers, making her very dangerous. However, her unique abilities and connection to the past makes her valuable to X.A.N.A.'s larger objectives. From the Keys to Lyoko in her memory, destroying surface sectors, or luring out Franz Hopper, it always tries to capture and exploit her whenever possible as it views her to be very useful after she was materialized.
*'''[[Yumi Ishiyama]]''': X.A.N.A. has the most intention to attack her the most of the team, which it knows her abilities can easily destroy its monsters and is just as smart as Jeremie or Aelita. As William, X.A.N.A. has shown this desire to take her out the most, unlike its host who has an obvious crush on Yumi. She even managed to be clever enough to temporarily "break" it from her friend's mind and understand who of the two was the real source behind the attacks William was supposedly causing.
 
*'''[[Odd Della Robbia]]''': X.A.N.A. sees Odd as the most childish and any attack that he did on his monsters, it wants him taken out before Odd can do any more harm. The program knows his weaknesses and will use them against him if it has the chance.
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*'''[[Yumi Ishiyama]]''': It sees Yumi as one of the more mature and competent of the group. It uses her the most to accomplish its plans and always tries to devirtualize her the most out of the three core fighters.
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*'''[[Odd Della Robbia]]''': X.A.N.A. just sees Odd as another annoyance. It even mocked him when its polymorph took his appearance after he suggested that it "turns into a wimp," but seems to respect him enough to have monsters listen to his orders when fighting the [[Marabounta (monster)|Marabounta]].
*'''[[Ulrich Stern]]''': X.A.N.A. knows Ulrich is the best fighter and what speed he possesses. As William, it has shown to understand how to take out Ulrich's arsenal and cope with his actions.
 
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*'''[[Ulrich Stern]]''': It knows Ulrich is the best fighter and usually fights by outnumbering him on Lyoko. It once took over his body when his mind was separated from it to attack the Core of Lyoko.
*'''[[William Dunbar]]''': As William fell into the grip of X.A.N.A., he was turning more like it and the program would demonstrate its actions through the real William's body and through a long-term bond, it would desire the Lyoko Warrior's superior abilities in going against the group and fulfilling its mission during ''Evolution''.
 
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*'''[[William Dunbar]]''': X.A.N.A. noticed that William has the most strength and potential out of the Lyoko Warriors. It immediately used the Scyphozoa to possess him on his first trip to Lyoko and makes him its most dangerous minion in the last season. Even after he was freed, X.A.N.A. tried to manipulate him into rejoining its side in [[Code Lyoko Evolution|''Evolution'']], showing it values his potential as a warrior and worthy agent.
*'''[[Laura Gauthier]]''': ''Evolution'' only. X.A.N.A. was less focused on Laura because the rest of the Lyoko Warriors never trust her. However, X.A.N.A. was surprised that Laura figured out its strategy in ''[[Rendezvous]]''.
 
*'''[[Eva Skinner]]''': In the ''Chronicles'' novel series, Eva joined their group of friends, but was really X.A.N.A.'s possessed pawn in order to destroy the group from within.
 
   
 
===[[Waldo Schaeffer|Franz Hopper]]===
 
===[[Waldo Schaeffer|Franz Hopper]]===
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He is the one that X.A.N.A. fears the most, being the one who created X.A.N.A. and understands how the program works as well as how to destroy it, along with the fact that he is the reason the team keeps surviving its most devastating moves. It considers him an even bigger threat than the Lyoko Warriors, so much that it was willing to spare Aelita and her friends from certain death because she is vital to drawing him out. X.A.N.A. is aware that Franz Hopper and the Lyoko Warriors working together can surely bring about its destruction.
As X.A.N.A. knows that Franz understands how to defeat it, the program developed a huge interest in taking out its creator. They both became part of the digital world and the creation intends to keep everything "he" knows for itself and take over the world, since its own abilities are restricted with its knowledge over technology and the real world.
 
   
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== Powers and Abilities ==
==Biography==
 
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[[File:VIRUS_Logo.jpg|thumb|180x180px|alt=]]X.A.N.A. is an extremely intelligent and powerful multi-agent system that has infected the Supercomputer that holds Lyoko and exploits its capabilities. It was initially bound to the machine, until it escaped into the network after stealing the [[Keys of Lyoko|Keys to Lyoko]], which also lets it build [[Replikas]] in other infected supercomputers. Its capabilities are listed below:
===Origin===
 
X.A.N.A. and Lyoko were both created by a computer genius named Franz Hopper, formerly Waldo Franz Schaeffer. He created it to destroy [[Project Carthage]], a military project designed to disrupt enemy communications. Along with X.A.N.A., Franz also created the "Temporal Reversion" program, which he used to give himself all the time he needed to perfect the virtual world. Throughout the reversions, X.A.N.A.'s intelligence grew exponentially, showing signs of self-awareness and curiosity which it directed to Franz, who was eventually driven into paranoia because of his abuse of the time reversions. He'd spent almost 7 years worth of reversions concerning the date of June 6th, 1994, but by his 1,265th use, X.A.N.A.'s presence had already started to set in.
 
   
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===[[Towers|Tower Control]]===
X.A.N.A. eventually betrayed Franz after the 2,546th return in time. The [[Men in Black|men in black]] found Hopper's location, forcing him and his daughter to retreat to Lyoko. X.A.N.A. then seized control the Supercomputer, and made Franz and his daughter prisoners on Lyoko. Hopper tried to reason with X.A.N.A. that they could live in peace, but X.A.N.A. ignores his pleas and tries to kill him and Aelita. To prevent X.A.N.A. from using Lyoko to wreak havoc on the Earth, Franz Hopper was forced to shut down the Supercomputer to stop X.A.N.A., forcing him, Aelita, and the hostile program into dormancy.
 
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[[File:Tour_carthage-1-.jpg|thumb|left|190x190px|X.A.N.A. activating a tower.|alt=]]
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X.A.N.A. activates [[Towers]], known by [[pulsations]], to act in the real world. It can only be stopped by deactivating them. With Towers, X.A.N.A. can take over networks or manifest [[Specter|specters]] from its multi-agent system, which are ghostly extensions that let it interact with the real world.
   
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On Earth, it can hack networks, control all forms of electromagnetic phenomena, and [[Possession|possess]] any targets (electronics, natural elements, inanimate objects, animals, etc.) like a virus to manipulate at will to attack the real world. After evolving further, X.A.N.A. can take over humans or manifest [[Polymorphic Specter|polymorphic specters]] to follow its orders on Earth as [[Pixelization|pixelized]] vessels with its spectral and electrical powers. Only the Lyoko Warriors cannot be controlled because being virtualized to Lyoko gives them resistance. Its vessels return to normal or simply disappear when their Towers deactivate, and victims do not remember what happened.
===Prequel===
 
[[File:18 evil crazy wires.png|thumb|X.A.N.A. taking control of cables.]]
 
X.A.N.A. was reawakened in [[X.A.N.A. Awakens|the 2-part prequel]] by [[Jeremie]], who reactivated the Supercomputer, and discovers [[Aelita]], Lyoko, and deadly monsters. As soon as it became active along with the Supercomputer, X.A.N.A. activated a tower in the Ice Sector. Through the tower, X.A.N.A. affects the real world by projecting electric shocks through the network, and possessing machines and wires to attack the teenagers who know about the Supercomputer. After that, X.A.N.A. conjures a living orb of electricity from the electrical outlets that it controls in order to hunt down and eliminate them. Jeremie virtualizes [[Odd Della Robbia|Odd]], [[Ulrich Stern|Ulrich]] and [[Yumi Ishiyama|Yumi]] onto Lyoko to fight the monsters, ensure Aelita gets to the red tower and she deactivates it through the interface. They discover that the attacks and monsters were the work of X.A.N.A., which they learned is a dangerous program which can control electricity and activates towers to gain access to the real world. The group decides to let Jeremie keep working on materializing Aelita, knowing they can neutralize X.A.N.A.'s attacks by deactivating its towers, starting the conflict between it and the Lyoko Warriors.
 
   
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Also, X.A.N.A. can activate Towers to [[Materialization|materialize]] or [[Translation|teleport]] minions to Earth through [[Scanners]] or [[Replikas]], [[X.A.N.A.'s Control Pendant|control]] [[X.A.N.A.'s Robot Army|technology]] it has built, or [[Deja Vu|show visions]] through a psychic link.
===Season 1===
 
[[File:TeddyGodzilla XANA attack image 1.png|thumb|left|X.A.N.A. using a spectre to launch an attack.]]
 
In the first season, X.A.N.A. launches random attacks and disasters on humanity to cause havoc and eliminate the Lyoko Warriors. It also tries to stop Aelita's materialization at the end so they won't unplug the Supercomputer.
 
   
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===[[Monsters]] & Programs===
Its next attack in ''[[Teddygozilla]]'' involves possessing [[Milly Solovieff|Milly]]'s teddy bear and turning into a giant monster to attack random humans. On Lyoko, Aelita and Odd get past the monsters, deactivate the tower, and a return to the past erases the damage caused.
 
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[[File:XANA Monsters.png|thumb|X.A.N.A.'s monsters|210x210px]]
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On Lyoko, X.A.N.A. virtualizes deadly [[Monsters|monsters]] to fight enemies and attack targets, and the [[Scyphozoa]] to steal digital memory or possess warriors on Lyoko. It can also [[Sector Alteration Program|alter environments]], create [[Guardian|virtual]] [[Simulation Bubble|prisons]], [[Missing Link|modify]] [[Nobody in Particular|incomplete]] [[X.A.N.A. William|warriors]], plant bugs or viruses, program equipment and vehicles, etc.
   
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Using its Replika network, X.A.N.A. can send the [[Kolossus]], its largest and most powerful monster and the ultimate weapon to use on Lyoko or any of its Replikas.
X.A.N.A. attempts nuclear sabotage in ''[[Seeing Is Believing]]''. It creates power failures all over town to accumulate electricity from the city's substations, and use it all to blast the nuclear power plant, causing a nuclear meltdown and wipe out the whole region. On Lyoko, X.A.N.A. hides the tower's path under the illusion of an oasis in the Desert Sector.
 
   
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==Biography==
In ''[[Holiday in the Fog]]'', X.A.N.A. spills over barrel containers filled with a poisonous substance to generate toxic clouds, which it spreads all over the school and the area around it.
 
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===Origin===
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X.A.N.A. was created by a computer scientist named [[Franz Hopper|Waldo Schaeffer]], who later changed his name to '''Franz Hopper''' in order to hide his identity from his enemies, to destroy [[Project Carthage]]. Despite his efforts to throw them off his trail, his enemies learned of his activities and pursue him. To escape them, he uses time reversions to give him all the time needed to perfect his virtual world Lyoko to be a safe place to live. Consequently, this caused X.A.N.A. to evolve until it becomes self-aware. Once Franz Hopper and [[Aelita|his daughter]] were virtualized, it rebels against them by trapping them in Lyoko and trying to eliminate them. Franz tries to reason with X.A.N.A. but it has grown too powerful and become a threat to mankind, forcing him to shut down the Supercomputer.
   
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===Awakening===
X.A.N.A. possesses the bus that Ulrich and Odd ride in ''[[Log Book]]''. It tries to crash the bus towards the petrochemical plant, threatening to destroy a small part of the city and them too. On Lyoko, X.A.N.A. traps the group with a sandstorm hiding a Megatank and splits the ground apart in the Desert Sector.
 
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[[File:18 evil crazy wires.png|thumb|X.A.N.A. controlling cables.|alt=|160x160px|left]]
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X.A.N.A. was reawakened when [[Jeremie]] reactivates the Supercomputer, discovering [[Aelita]] and Lyoko. It sends monsters after Aelita and activates a Tower to attack with electricity and machines, then manifests a lightning specter after those involved with Lyoko. Jeremie sends [[Odd Della Robbia|Odd]], [[Ulrich Stern|Ulrich]], and [[Yumi Ishiyama|Yumi]] to Lyoko to deactivate the Tower and let him continue his work on Aelita's materialization, knowing how to neutralize X.A.N.A, officially becoming the Lyoko Warriors.[[File:TeddyGodzilla XANA attack image 1.png|thumb|X.A.N.A. using a specter to launch an attack.|alt=|150x150px]]
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While Jeremie works on materialization, X.A.N.A. launches random attacks on humanity and its enemies by using Towers to hack networks to control machines, generate electrical phenomena, or manifest specters to possess targets to bend to its will, while guarding its Towers with monsters and virtual traps on Lyoko. The group continue fighting X.A.N.A., thwarting its attacks at every turn and fixing the damage caused with [[Return to the Past|time reversions]].
   
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When the heroes finally manage to materialize Aelita with [[Code: Earth (program)|Code: Earth]], X.A.N.A. stole her memories of her life on Earth to bind her fate to the Supercomputer, putting her into a lethal coma when the team shut the machine down, which ensures X.A.N.A.'s survival for now.
It uses a powerful virus to infect the country's main computer systems in ''[[Big Bug]]''. This causes problems with some infrastructures, but its goal is to get an automated freight train carrying deadly toxins on a collision course with another train. If they crash, the toxins will be released and spread out into the air, creating a serious ecological disaster on the city.
 
   
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===Growing Power===
In ''[[Cruel Dilemma]]'', X.A.N.A. attacks directly by possessing two bulldozers and using them to demolish the Factory. Its aim is to wreck the computer interface and the Scanners, meaning no more communication with Aelita or transfers to Lyoko, preventing any more resistance against it.
 
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[[File:New_Order_Charge_up_lasers_image_1.png|thumb|left|X.A.N.A.'s new monster.]]
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X.A.N.A. is somehow evolving and getting stronger, creating new monsters on Lyoko, displayed by the [[Tarantula|Tarantulas]]. It sends one of them which successfully defeats all three warriors, but they manage to outwit two of them guarding an activated Tower and thwart X.A.N.A.'s latest attack.
   
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The heroes discover the [[The Hermitage|Hermitage]], which is owned by the mysterious [[Waldo Schaeffer|Franz Hopper]]. Later, the group discovers a [[Sector Five|fifth sector]] on Lyoko where X.A.N.A. lives and all its data can be accessed, but it's guarded by [[Creeper]] and [[Manta]] monsters, and trap mechanisms linked to a [[Sector Five Security Countdown|countdown procedure]]. The team regularly venture there to mine through X.A.N.A.'s own data relating to the virus tying Aelita to X.A.N.A. with the hope of freeing her.
X.A.N.A. tries an infiltration tactic in ''[[Image Problem]]''. It uses an activated tower as bait in order to capture Yumi with a [[Guardian]] while Aelita deactivates it and fools the group into thinking she was devirtualized. With the tower, X.A.N.A. has really materialized a [[X.A.N.A.-Yumi|clone]] of her into the real world. The evil clone causes trouble between them and convinces them to go to Lyoko. Inside the Scanner room, the fake Yumi tries to unplug the Scanners to leave them with no way to return. The others free the real Yumi and she fights her clone, while the others deactivate the tower.
 
   
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[[File:Unchartered_Territory_Ulrich_sees_the_Scyphozoa_image_2.png|thumb|170px|The Scyphozoa stealing Aelita's memory.]]X.A.N.A. develops greater objectives as its power grows. While still fighting the heroes, it wants to acquire the Keys to Lyoko inside Aelita's memory to gain access to the world network. To that end, X.A.N.A. creates the [[Scyphozoa]] to extract digital memory from anything and launches schemes to lure Aelita to Lyoko for its monster to capture her without interference. Until X.A.N.A. gets the keys, it has to be careful to keep her alive no matter what.
The next attack in ''[[End of Take]]'' involves taking over an animatronic alien meant for a movie, and send it to hunt down the group. On Lyoko, X.A.N.A. creates another activated tower next to the real one to confuse the group.
 
   
  +
The group discovers that the returns to the past are making X.A.N.A. stronger, confirmed when it took control of the function to repeat the same day until it can possess humans, making them [[Pixelization|pixelized]], empowered agents to attack with or follow its orders on Earth, like kidnapping Aelita to send to Lyoko. However, X.A.N.A. cannot possess Lyoko Warriors, since it could only control Jeremie to destroy the newly discovered diary of Franz Hopper, who copied the data beforehand and got virtualized to prevent further possessions.
In ''[[Satellite]]'', X.A.N.A. uses the school's phone antenna to gain control of a [[The Satellite|military satellite]] armed with a powerful laser. It tries to use it to destroy its enemies at the school. It also activated the tower inside an ice cave with a cleverly hidden entrance to fool the group long enough to kill its target.
 
   
  +
X.A.N.A. and the heroes aid each other out of necessity on two occasions. When Jeremie created the [[Marabounta (monster)|Marabounta]] and went out of control, it sends monsters to protect Aelita and help the team destroy it, because it still needs Aelita intact. Then, when the Supercomputer's nuclear battery fails, putting it and Aelita at risk of dying, X.A.N.A. possesses a criminal to steal another and kidnaps Jeremie to make him change the battery, since it knows they both have an interest in keeping the machine online. Once he puts in the battery, X.A.N.A.'s pawn tries to kill him and fails.
X.A.N.A. captures Aelita with a Guardian in ''[[The Girl of the Dreams|The Girl of my Dreams]]''. At the same time, it possesses Yumi's samurai armor to attack the group. The group searches for Aelita on Lyoko and free her, while Yumi keeps the living armor at bay until she deactivates the Tower.
 
   
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[[File:Clone_polymorph.jpg|thumb|left|A polymorphic specter.]]
In ''[[Plagued]]'', X.A.N.A. possesses rats and unleashes an army on the school to eat the students alive. On Lyoko, it tilts the slope of the plateau upside down, which makes it harder for them to fight the monsters.
 
  +
As more proof of its growing power. X.A.N.A. can manifest [[Polymorphic Specter|polymorphic specters]], ghosts with pixelized abilities that appear as clones of people or shapeshifters that transform at will. Since it cannot control Lyoko Warriors, this allows X.A.N.A. to use their identities to deceive them, ambush them on Lyoko, or impersonate Franz Hopper to gain their trust.
   
  +
Later, the real Franz Hopper contacts the group and helps decrypt his diary, despite X.A.N.A.'s efforts to stop him in the former or steal their data in the latter. Following the decryption, the information reveals that Franz Hopper created X.A.N.A. and Lyoko, but also that Aelita is his daughter and he virtualized her to Lyoko along with himself.
X.A.N.A. tries an attack similar to the previous one using swarms of hornets in ''[[Swarming Attack]]''.
 
   
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[[File:The_Key_-_X.A.N.A._is_freed-1.png|thumb|160px|X.A.N.A. frees itself from the Supercomputer in ''[[The Key]]''.]]
In ''[[Just in Time]]'', X.A.N.A. generates ultrasound waves out of electrical sockets all over the city to shatter objects, damage building structures, and cause earthquakes in the city.
 
  +
Jeremie also learns from the diary what X.A.N.A. seeks within Aelita's memory and that she doesn't have a virus, but a missing fragment. X.A.N.A. uses a fake to lure the heroes into a trap that devirtualizes her allies and allows the Scyphozoa to successfully steal her memory and the Keys to Lyoko, giving X.A.N.A. everything it needs to escape the Supercomputer. Aelita seemed to perish as a result, but Franz Hopper restores her to life and the missing part of herself: the memories of her former life on Earth, at last making her fully human. However, X.A.N.A. is no longer bound to the Supercomputer anymore, making it more dangerous than ever.
   
  +
===Targeting Lyoko===
In ''[[The Trap (Code Lyoko)|The Trap]]'', X.A.N.A. tries to trap the group inside the Factory using its mechanical systems, specifically the elevator and the assembly line. Jeremie and Odd are lured into the assembly line, and are attacked by its machines, while it holds the rest prisoner in the elevator. It overloads the boiler to make it explode for Odd and Jeremie, and makes the elevator fill with water to try and drown Ulrich.
 
  +
[[File:Coreoflyoko.jpg|thumb|left|X.A.N.A.'s monsters attacking the Core of Lyoko.|alt=|150x150px]]
  +
X.A.N.A.'s multi-agent system has now expanded to the world network. It hasn't attacked the heroes since it freed itself, thinking it is beyond their reach. When Jeremie upgrades the Superscan to find X.A.N.A, it responds by sending monsters to attack the [[Core of Lyoko]] to wipe out the virtual world, intending to keep the heroes from discovering its network schemes. The group stops its assault in the end.
   
  +
[[File:Codexana.jpg|thumb|130x130px|X.A.N.A.'s code being entered|alt=]]Having no more need for the Supercomputer, X.A.N.A. is free to launch attacks on Lyoko itself, which is the team's only means of fighting. To accomplish this, it targets the Core of Lyoko in the virtual world with monster attacks, while using diversions to keep the heroes busy or attacks the Supercomputer directly using possessed humans and other physical methods.
X.A.N.A. possesses containers of laughing gas to send clouds of them after the group in ''[[Laughing Fit]]''. A small amount gets into Odd's Scanner as he is virtualized, severely weakening him on Lyoko, and chases Jeremie away from the lab interface.
 
   
  +
Additionally, X.A.N.A. also destroys all of Lyoko's surface sectors by using the Scyphozoa to possess Aelita with its [[X.A.N.A. (code)|virus code]] and make her input the code into the sector's Way Towers, allowing X.A.N.A. to erase the corresponding sectors completely. It takes these actions to make the Transport Orb inaccessible to the team. It succeeds in the order of Forest, Desert, Ice, and Mountain, but Jeremie finds the means to virtualize the team directly to Sector 5.
Instead of attacking the city, X.A.N.A. sets a trap for the group in ''[[Claustrophobia]]'', where it electrifies the cafeteria's walls and ceiling, preventing Ulrich, Odd, and other students from escaping. Jeremie and Yumi finished lunch earlier and left before they were trapped along with them, and stopped the building from collapsing.
 
   
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[[File:Xanapossessedwilliam.jpg|thumb|left|173x173px|X.A.N.A. transforming William]]
In ''[[Amnesia]]'', X.A.N.A. possesses a machine that generates microscopic robots to make its own nano-viruses that cause memory loss to those infected. It planned to let this virus spread out into the world, pacifying the human race for X.A.N.A. to take over. Ulrich was the first victim along with several others, who goes to help his friends despite his amnesia.
 
  +
Initially reluctant, the team decides to recruit [[William Dunbar]]. However, he gets cocky during his first mission, allowing X.A.N.A. to use the Scyphozoa to possess him. It puts William at the head of a Creeper army focused on the Core of Lyoko, who quickly destroy its shields with their combined firepower. When the warriors arrive, he defeats them all and successfully destroys the Core, wiping out Lyoko and rendering the team unable to fight X.A.N.A. now. William was left in the digital void, but X.A.N.A. retrieves and enslaves him.
   
  +
===World Domination Plans===
X.A.N.A. attacks humans directly in ''[[Killer Music]]''. It creates a music file that transmits a signal that puts anyone who listens to it into a paralyzed state, and will die from cardiac arrest within several hours. It also uses the media for maximum coverage, and eventually gets to the lab too. Aelita deactivates the Tower before everyone in the city is wiped out.
 
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[[File:12_hello_handsome.png|thumb|170px|X.A.N.A.'s newest minion|alt=]]
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Through a message sent by Franz Hopper, Jeremie recreates Lyoko. Soon after they do, X.A.N.A. sends William to the real world from the Scanners to kidnap Aelita and throw her into the Digital Sea. The group saves her and defeats William, but know he is an [[X.A.N.A. William|agent of X.A.N.A.]] now. To avoid suspicion about his disappearance at the academy, the group create their own William clone.
   
  +
X.A.N.A. has made William its general and most dangerous weapon. It has made him a fighter that is more than a match for any warrior, lets him command its monsters, and gave him the [[Black Manta]] to summon and ride on. He also has a copy of the Keys to Lyoko, allowing him to influence or deactivate Towers activated by others. Finally, X.A.N.A. can materialize him from the Scanners as a pixelized human without using a Tower for missions on Earth.
In ''[[The Robots]]'', X.A.N.A. builds deadly robots using the machines in the Factory. It has one download the identities of the group from the lab interface, then wreck it to prevent them from using it. X.A.N.A. sends the robots after the group at the school. But, the interface was easy to fix thanks to Jeremie.
 
   
  +
While X.A.N.A. is still determined to destroy the Lyoko Warriors and the Supercomputer, it decides Franz Hopper is the biggest threat. Since he's the reason the team always recovers and X.A.N.A. knows that Franz joining forces with the team would be the ultimate threat. To deal with him, it schemes to throw Aelita into the Digital Sea, knowing he would risk his life to save his daughter. Meanwhile, inside the world network, X.A.N.A. infects other supercomputers, putting [[Replikas]] inside them, smaller Lyoko copies. They are extensions that let it survive outside the Supercomputer and take over secret laboratories and military bases on Earth for its own purposes.
Its next attack in ''[[Zero Gravity Zone]]'' involves controlling gravity through the use of the electrical networks. Using street lights, X.A.N.A. creates electromagnetic fields to upset the magnetic attraction of the Earth, which alters the gravity fields around targeted areas, making objects and people float endlessly in the sky. It hacks many power stations to gather enough energy, so it can concentrate an enormous field around the soccer game, where it planned to use on the group and several others.
 
   
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When the heroes build their own virtual ship, the [[The Skidbladnir|Skidbladnir]], to counter X.A.N.A.'s network schemes, it creates [[Kongre|virtual]] [[Shark|sea]] [[Kalamar|monsters]] and the [[Rorkal]] Nav Skid for William to fight them in the Digital Sea. Inside Replika sectors, it defends itself by sending Lyoko monsters and William to attack and activates Towers to deal with the teleported heroes sent to its Earth facilities to destroy their supercomputers. It can also have William deactivate their Towers to quickly end their missions. Also, X.A.N.A. launches attacks and programs traps that specifically target their virtual ship to prevent any further interference but continues to fail.
X.A.N.A. tries to eliminate the group on Lyoko in ''[[Routine]]''. It activates a Tower to infect the Supercomputer itself this time, stopping devirtualization and making it so they will disappear forever if they lose all their life points. When Jeremie works on the hardware, X.A.N.A. locks him out of the elevator and gives him a shock when he starts messing with the circuits. Aelita deactivates the Tower.
 
   
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[[File:Kolossus_Code_Lyoko.jpg|thumb|The mighty Kolossus.|alt=|160x160px]]
In ''[[Rock Bottom?]]'', X.A.N.A. melts the ground around buildings in the city, causing them to sink into the earth, including the school buildings.
 
  +
Near the end of the series, X.A.N.A. teleports William to its Ice Replika base to fight the team, which allows them to access data on how it controls him, then uses the power of all its Replikas to create the strongest monster: "the [[Kolossus]]," a massive titan that can devirtualize enemies instantly. They manage to escape with their ship intact and discover that X.A.N.A. controls hundreds of Replikas in the network.
   
  +
After which, Jeremie creates a program to free William and an incomplete one to destroy X.A.N.A. The heroes go back to the Ice Replika for the former task where they discover its plan to create weapons and [[X.A.N.A.'s Robot Army|armies of robots]] for world conquest. They manage to free William, but the Kolossus destroys the Skidbladnir. X.A.N.A. may have lost William, but still has the Kolossus and built an army capable of world domination. Jeremie's multi-agent program is their only hope of stopping X.A.N.A.'s evil ambitions.
[[File:XANA.png|thumb|X.A.N.A.'s only real physical appearance, seen in ''[[Ghost Channel]]''.]]
 
In ''[[Ghost Channel]]'', X.A.N.A. traps the three warriors inside a [[Simulation Bubble]] as they were thwarting a different attack. It fools them into thinking they are living on Earth, but they are really stuck inside a virtual simulation. X.A.N.A. poses as a fake Jeremie to try to get them in the fake Scanners to delete them once and for all. The real Jeremie virtualizes himself inside of the simulation, and convinces the others that he is the real one, because X.A.N.A. is a mere program and could never fully understand the nature of their friendship. Angered, it tries to kill them inside the simulation, but Aelita dispels the bubble with her Creativity in time.
 
   
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===The End of X.A.N.A.===
X.A.N.A. tries to stop Aelita's materialization when it is finally complete in ''[[Code: Earth (episode)|Code: Earth]]''. It sends Megatanks to attack the Tower that they are using for the process. Its assault failed, but X.A.N.A. managed to secretly take a part of her very being to keep her linked to the Supercomputer.
 
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[[File:Xana_1.png|thumb|170px|X.A.N.A.'s final moments in the real world as its eradicated by Jeremie's [[Anti-X.A.N.A. Program]].|alt=|left]]
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X.A.N.A. engages its final assault when the group and Franz Hopper meet to launch their '''Anti-X.A.N.A. Program'''. It possesses William to knock out Jeremie and try to unplug the Scanners, hoping to destroy all its enemies using the Kolossus and Mantas. While Ulrich manages to defeat the Kolossus, Franz Hopper sacrifices himself to provide the energy for Aelita to launch the program, appearing as a swarm of agents that destroys all of its monsters before spreading to the other four sectors of Lyoko, then making its way out into the network where it destroys all its Replikas one by one.
   
  +
As this happens, the specter possessing William is forced out of him, showing X.A.N.A. in agony and glitching out due to its entire multi-agent system being destroyed everywhere. Then, it finally fades into oblivion while its activated Tower returns to normal as the hostile program is erased for good. Ultimately, the Lyoko Warriors are successful in destroying X.A.N.A. forever and ensuring it will never return.
In ''[[False Start]]'', after Aelita was made flesh and blood, the group discovered X.A.N.A.'s alteration, mistaking it to be a virus implanted in her. When they tried to shut the Supercomputer down, Aelita gets put into a lethal coma, but comes back to life when it's turned on. X.A.N.A. launches its biggest attack as this happens, using a Scanner to send Kankrelats to Earth and attack the school. Jeremie shuts down the infected Scanner, and Aelita deactivates the Tower.
 
   
===Season 2===
+
==Other Continuities==
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X.A.N.A. reappears in the live-action ''Evolution'' sequel and the alternate continuity of the ''Chronicles'' novel series. It should be noted that neither of the two continuities are completely canon, as ''Evolution'' was disowned by the original showrunners, who confirmed that only a few of their ideas made it into the show and that the events within were not canon.<ref>[http://cdal.over-blog.com/article-interview-sophie-decroisette-partie-2-122910086.html "Interview - Sophie Decroisette, partie 2".] Ces Dessins Animés-Là qui méritent qu'on s'en souvienne. March 11, 2014.</ref><ref>[https://en.codelyoko.fr/interviews/qr_sophie_decroisette.cl "Interview with Sophie Decroisette"] - CodeLyoko.fr (2016)</ref> Similarly, while the novels were written with the original documents in hand, not all of their events are noted to be canon either.
[[File:New Order Charge up lasers image 1.png|thumb|left|X.A.N.A.'s new monster.]]
 
X.A.N.A. is evolving further, being able to create new monsters, possess humans to do its bidding, and think of better schemes and larger goals. X.A.N.A. now wants to steal Aelita's memory using the [[Scyphozoa]], and keep the group from interfering with that task. Its attacks are no longer random, but mainly focused on the group and used for larger purposes. It also tries to keep them from gaining new knowledge about Franz Hopper, the mysterious creator of Lyoko.
 
   
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===Code Lyoko: Evolution===
In ''[[New Order|the starting episode]]'', X.A.N.A. shows its growing strength by creating [[Tarantula|a new monster]] that successfully takes out all three of the Lyoko Warriors while they were riding their new vehicles. When X.A.N.A. sees Aelita wander into a mysterious house called "[[The Hermitage|the Hermitage]]," it sends a ghostly spectre to kidnap her to use as bait for her friends, then possesses the house for a trap waiting for the others. X.A.N.A. attacks by moving and throwing sharp or heavy objects at them, then tries to lock them in a sauna and boil them alive, but only catches Ulrich and Yumi. The attack is thwarted before they are eliminated.
 
 
[[File:Unchartered Territory Ulrich sees the Scyphozoa image 2.png|thumb|The Scyphozoa stealing Aelita's memory.]]
 
In ''[[Uncharted Territory]]'', X.A.N.A. sends Aelita to a mysterious new sector to try and have her memory drained. When X.A.N.A. sees her alone on Lyoko, it sends monsters to lead her to the edge of the [[Forest Sector]]. It then sends [[Transport Orb|a strange orb]] to transport her to a hidden sector called [[Sector 5]], uses [[Creeper]] monsters to corner her, and sends the Scyphozoa monster to steal her digital memory. The others save her life and escape successfully.
 
 
X.A.N.A. attacks the Lyoko Warriors as they explore the new sector in ''[[Exploration]]''. Its Creepers devirtualize Odd and Ulrich, but they can't materialize into the real world because their virtual forms are not registered for Sector 5. It also traps Aelita within its walls and sends the Scyphozoa after her. It programs a laser trap for Yumi, but she gets past it and saves Aelita. They discover that Sector 5 is where X.A.N.A. lives and holds the entirety of Lyoko's data. It hatches [[Manta|flying Mantas]] to deal with them, but Aelita escapes and the rest of the group is materialized successfully.
 
 
In ''[[A Great Day]]'', X.A.N.A. takes over [[Return to the Past|the return in time program]]. When the group acquires new data from Sector 5, X.A.N.A. plants a trap inside of it, a virus that gives it control of returning to the past. X.A.N.A. uses the function to repeat the same day many times and activates a Tower on Lyoko. The last trip leaves Aelita alone on Lyoko, then X.A.N.A. unleashes a spectre to possess Sissi. It has her take Jeremie to an isolated place, while the Scyphozoa attacks Aelita. When they stop the return trips and shut down the Tower, Sissi returns to normal with no memory of what she was doing. This reveals to the group that time reversions increase X.A.N.A.'s power, and can now control human beings now.
 
 
In ''[[Mister Pück (episode)|Mister Pück]]'', X.A.N.A. possesses one of the group. Aelita's mysterious visions lead the group to a briefcase of compact discs that contain Franz Hopper's diary. X.A.N.A. spies on Jeremie from his computer and sees him with the case. Taking action, it tries to possess one of the group. It fails with Odd and Ulrich, but succeeds with Jeremie. X.A.N.A. has him destroy the discs, then kidnaps Aelita and brings her to the Factory. The others rescue Aelita, and Jeremie fights Odd with new powers. Once Jeremie returns to normal, they learn that people who have been virtualized to Lyoko cannot be controlled by X.A.N.A. Jeremie is then virtualized as a warrior to protect himself, with the experience having been most displeasing for him.
 
 
[[File:Saint_Valentines Day XANA chip in the necklace image 1.png|thumb|left|The special chip used inside of the necklace.]]
 
X.A.N.A. makes [[X.A.N.A.'s Control Pendant|a special necklace]] to control Aelita in ''[[Saint Valentine's Day]]''. A possessed delivery boy leaves the necklace in front of her room. She wears it, thinking it to be a gift from Jeremie. X.A.N.A. then activates a Tower, which makes Aelita's necklace project an special virus program designed to possess her mind. The spellbound Aelita convinces Jeremie to send her to Lyoko. She then turns against her friends and heads straight for the Scyphozoa. The plan fails when Jeremie tells Odd to shoot her, gambling that X.A.N.A. wouldn't risk her dying before retrieving her memory. X.A.N.A. eventually falls for their bluff and the Scyphozoa lets her go. Aelita turns back to normal, and she deactivates the Tower. They smash the necklace and find a chip with X.A.N.A.'s eye symbol, which is the source of the necklace's mind control.
 
 
In ''[[Final Mix]]'', X.A.N.A. uses Jim kidnaps Aelita to try to steal her memory. It possesses Jim and and makes him bring Aelita to the lab to virtualize her where it wants her. X.A.N.A. uses Jim and monsters to provide interference as the Scyphozoa drains her memory. She was saved by Ulrich in time.
 
 
X.A.N.A. schemes to steal Aelita's memory by using Yumi in ''[[Missing Link|the next episode]]''. During a mission to Lyoko, the Scyphozoa appears and attacks Yumi instead. It takes her DNA sequence, leaving her unable to be rematerialized into the real world. Without thinking, Aelita recklessly uses a process to transfer her sequence to Yumi's own, but she doesn't know that this will expose her memory for X.A.N.A. to steal at will, which was its plan all along. She is stopped by the other warriors and they find Yumi's missing sequence within Sector 5's data.
 
 
In ''[[The Chips Are Down]]'', X.A.N.A. tries to eliminate the team on Lyoko. It virtualizes an enormous army of Krabs on Lyoko, then possesses Nicholas to make him use the lab interface to change the rules of battle, making it so the warriors get hurt for real by monster attacks until they succumb to the pain. Jeremie undoes the change, but the Krab army tries to block access to the tower. Ulrich clears a path to get Aelita through.
 
 
[[File:XANA 081.jpg|thumb|X.A.N.A.'s monsters and the group fighting the Marabounta.]]
 
X.A.N.A. fights alongside the Lyoko Warriors against a common enemy this time in ''[[Marabounta (episode)|Marabounta]]. W''hen Jeremie programs his own monster named the [[Marabounta (monster)|Marabounta]] to use against X.A.N.A.'s monsters. It works well at first, but his monster eventually starts targeting Aelita because she is not fully human yet. X.A.N.A.'s monsters surprisingly act to save and protect Aelita, and even help the Lyoko Warriors destroy the Marabounta in the end. This is because it still needs Aelita's memory and cannot let her die, and knows that the monster would eventually destroy all of Lyoko if left unchecked, including X.A.N.A. itself. Once the threat is over, X.A.N.A. has its monsters withdraw, as there is no point to continue fighting.
 
 
In ''[[Common Interest]]'', X.A.N.A. once again acts to save its own life. The Supercomputer's nuclear battery power has started failing, threatening to shut down forever, and putting X.A.N.A. and Aelita at risk of dying. X.A.N.A. acts by possessing a criminal and have him steal a uranium battery to bring back to the Factory, succumbing to the system periodically shutting down while doing it. It then has him kidnap Jeremie to force him to change the battery. It needs Jeremie to do the procedure because if its possessed pawn tries, he will be rendered unconscious like Aelita as soon as the failing battery comes out, and X.A.N.A. knows that they both have a common interest to keep the Supercomputer online. Once Jeremie replaces the battery, his usefulness has ended and the possessed human now tries to kill him. They deactivate the Tower in time.
 
 
X.A.N.A. strings Jeremie along to eliminate him in ''[[Temptation]]''. He tries out equipment that he thinks will increase his own intelligence by using temporal reversions like X.A.N.A. does now, but this worsens his health in the process. X.A.N.A. keeps attacking to get him to launch more return trips. When Jeremie needs to go to the [[The Hospital|hospital]], it possesses the ambulance and makes it speed towards the river with Yumi inside. Aelita, Ulrich, and Odd deactivate the tower and a return to the past saves Jeremie and Yumi.
 
 
In ''[[A Bad Turn]]'', X.A.N.A. sends real Krab monsters to attack on Earth using the Scanners. Each one materialized destroys the Scanner used in the Factory. It deliberately leaves one Scanner intact, so the group could virtualize Aelita first before anyone else. In that instant, it creates another Krab and wrecks the last Scanner, thus leaving her with no one to protect her from the Scyphozoa. The three Krabs are sent to Yumi's house, the school, and in the above portion of the Factory to deal with rest of the team. X.A.N.A. thinks Aelita is vulnerable without her friends, but it underestimates her skill and fails again.
 
 
X.A.N.A. launches a [[zombie]] attack in ''[[Attack of the Zombies]]''. X.A.N.A. possesses [[Kiwi|Odd's dog]] and possesses him, so that when he bites someone, that person gets turned into a zombie. It tries to zombify the entire school and to get Aelita to Lyoko with the fewest bodyguards possible by biting Odd, but not Jeremie or her. The dog then goes after Jeremie after he completes their virtualization. Also, later into the battle, it makes the entire plateau invisible to confuse the group. Aelita can sense the path and takes advantage of the fact that monsters still won't dare try to fire on her to get to the Tower.
 
 
In ''[[Ultimatum]]'', X.A.N.A. tries to coerce Aelita into giving up her memory by taking her friends hostage. It possesses Principal Delmas, who kidnaps Yumi and Odd and takes them to an abandoned refrigerator warehouse. X.A.N.A. then gives Jeremie its ultimatum through his mobile. Ulrich saves them by using Jeremie's new EMP bomb, which temporarily knocks out the possessed Delmas. He regains consciousness, and now chases and attacks the escapees at the Factory even as Sissi helps them. Aelita deactivates the Tower in time.
 
 
[[File:Clone polymorph.jpg|thumb|left|A polymorphic spectre.]]
 
X.A.N.A. attempts to divide and conquer in ''[[X.A.N.A.'s Kiss]]''. It creates [[Polymorphic Clone|a polymorphic spectre]], a ghost that can change into different people at will. The spectre turns into different members of the gang and kisses people to sow jealousy within the team and then tries to trick Aelita into going to Lyoko while they are distracted. They discover its true nature and the polymorph fights them. During the fighting on Lyoko, X.A.N.A. deletes the bridge to the Tower after Aelita crosses to isolate her with the Scyphozoa. She is saved by Ulrich, and she deactivates the Tower.
 
 
In ''[[Vertigo]]'', X.A.N.A. attacks with a possessed pack of wolves in the woods when a failed anti-virus that Aelita is injected with makes her invisible in the real world and unable to enter Towers. This gives the Scyphozoa a chance, but she is saved. Jeremie restores her own signature in time to shut down the Tower.
 
 
X.A.N.A. controls the weather for another scheme in ''[[Cold War]]''. It triggers Towers on Lyoko one after another to fake an malfunction, so Jeremie and Aelita would stay in the lab to try and fix the problem, while the rest eat lunch in the cafeteria. X.A.N.A. then unleashes a massive spectre to take over clouds in the sky in order to create a deadly snowstorm that goes below freezing level, trying to trap the heroes at school and get Aelita to go to Lyoko alone. When Odd manages to get to the Factory and virtualized, flying Mantas suddenly appear on Lyoko and create minefields to block escape from the Scyphozoa and access to the tower. Odd uses a Manta to start a chain of mine explosions that open a path to the tower.
 
 
In ''[[Déjà Vu]]'', X.A.N.A. torments Aelita with mental visions of her past. It activates a Tower to show her visions of her former life using the memories it has stolen from her. This compels Aelita to go to Sector 5 to find answers. She willingly takes the bait and lets the Transport Orb take her when it's called by X.A.N.A, despite Jeremie's protests. The Scyphozoa attacks her twice during this trip and is stopped both times.
 
 
In ''[[Tip-Top Shape]]'', X.A.N.A. possesses the school nurse Yolanda. Jeremie decides to test out an experiment which will give a person the powers of a pixelized human. Odd volunteers, and is enhanced by a spectre of Jeremie's design using an active Tower in the Mountain Sector. At first, he fights well against Yolanda, but X.A.N.A. takes control of Jeremie's Tower, using it to overcharge his energy until it kills him. While Aelita and Yumi help Odd first, X.A.N.A. cloaks the entire Mountain Sector in impenetrable fog. They save Odd in time and deactivate the original tower in the end.
 
 
In ''[[Is Anybody Out There?]]'', it creates a ghost monster from a spectre, which goes after the heroes. It has also corrupted [[Superscan|the Superscan]], so they can't detect the activated tower. Ulrich decides to stay on Earth to protect Jeremie from the ghost, and Yumi, Odd, and Aelita are sent to Lyoko. Yumi and Aelita go to Sector 5 to try to fix the Superscan while Odd searches for the tower in the other four sectors. The girls fail to trigger the key and Aelita is left alone with the Scyphozoa. Odd is devirtualized, but gets up to the lab to send the Transport Orb for her before she is caught. She deactivates the tower in the [[Ice Sector]], and a return to the past fixes the Superscan.
 
 
X.A.N.A. poses as Franz Hopper to deceive the group in ''[[Franz Hopper (episode)|Franz Hopper]]''. It uses the single, undetectable Tower in Sector 5 to generate a spectre as Franz Hopper, the mysterious creator of Lyoko. The spectre turns the entire group against Jeremie, saying the Scanners were too dangerous. He sends the three to Sector 5 to get the presumed anti-virus data. The trap is sprung when he virtualizes Aelita in the Desert Sector. He devirtualizes the group's weapons, shuts off the Scanners, and leaves Aelita with the Scyphozoa. Jeremie has seen through its nature in time and had a decoy be captured and drained instead. The clone reverts to a ghost and retreats for now. Jeremie restores the Scanners and their weapons, and sends Aelita to Sector 5. However, the spectre returns and tries to suffocate Jeremie to death, only to fail when Aelita deactivates the Tower.
 
 
It tries to prevent contact between the group and Franz Hopper in ''[[Contact]]''. Hopper activates his own Tower to possess Sissi, but she speaks in a unknown language. X.A.N.A. attacks the problem on two fronts, sending Megatanks to attack his Tower on Lyoko and possessing a doctor to eliminate the spellbound Sissi in the real world. The latter threat makes Aelita go off on her own to deactivate X.A.N.A.'s tower, which leads to her being targeted by the Scyphozoa. Odd wards them off before they get to her, and she deactivates the Tower.
 
 
X.A.N.A. takes advantage of the group's operation to decrypt all of Franz Hopper's notes in ''[[Revelation]]''. It has a polymorphic spectre ambush Odd, and trap him in a pit at the Hermitage that slowly fills up with water. The spectre then takes Odd's place on Lyoko. As they activate a Tower to launch the decryption, it springs its trap as the spectre attacks the warriors, while X.A.N.A. tries to take control of their Tower. If X.A.N.A. succeeds, it will gain access to the restricted part of the Supercomputer, which holds both Franz Hopper's data and all of the Lyoko Warriors' combat gear and essential programs. It has three Tarantulas guard the Tower's wires from Ulrich. X.A.N.A. has taken out all the obstacles, but Franz Hopper interferes, who takes back control of the Tower away from X.A.N.A. and runs the decryption at full speed. It withdraws its monsters away, defeated. The information in the diary also reveals that Aelita is actually a human being and the daughter of Franz Hopper.
 
 
[[File:The Key - X.A.N.A. is freed-1.png|thumb|left|X.A.N.A. is finally released from the supercomputer in ''[[The Key]]''.]]
 
In ''[[The Key]]'', the group discovers that Aelita holds [[Keys of Lyoko|the keys to Lyoko]] inside of her, which is the object in Aelita's memory that X.A.N.A. seeks. With the keys, it can escape the Supercomputer and access the world network. Upon learning of Aelita's true origins, Jeremie discovers that Aelita does not have a virus at all, but a missing fragment of herself. He discovers the piece in Sector 5, and they go to get it back. They succeed in finding it, however; the fragment was revealed to be a fake made to lure Aelita. The entire room falls apart around Aelita which devirtualizes the warriors. The Scyphozoa appears, but with nothing and no one left to stop it this time. With her entire memory siphoned, she drops to the floor, completely lifeless. With the keys in hand, X.A.N.A. activates Towers in all four sectors which render Lyoko nonfunctional and finally frees itself from the Supercomputer. It then escapes into the world network with all of its accumulated power. Even though Franz Hopper managed to restore Aelita and Lyoko, X.A.N.A. is now free from the Supercomputer, and unplugging the machine won't stop it anymore.
 
 
===Season 3===
 
[[File:Coreoflyoko.jpg|thumb|X.A.N.A.'s monsters attacking the Core of Lyoko.]]
 
X.A.N.A. now exists inside the world network for its own agenda, returning to Lyoko to launch schemes to destroy the virtual world, since it's of no further use to X.A.N.A. now. It accomplishes this by sending monsters to the [[Core of Lyoko]] in Sector 5 to attack and destroy it. While doing this, X.A.N.A. launches attacks to distract them from its efforts. It also uses the Scyphozoa to possess Aelita to make her put its code into Way Towers, allowing it to destroy Lyoko sectors one by one, so it can prevent access to the [[Transport Orb]]. X.A.N.A. also tries to sabotage or destroy the Supercomputer entirely in the real world.
 
 
In the starting episode, ''[[Straight to Heart]]'', X.A.N.A. remains silent during all summer vacation after escaping from the Supercomputer. Then, it sends monsters to an unexplored room in Sector 5. The group find the monsters shooting at a floating blue orb covered with shields, which they identify as the Core of Lyoko. They stop the assault and save the Core before it is destroyed.
 
 
[[File:Codexana.jpg|thumb|left|Its code is entered into Forest Way Tower.]]
 
In ''[[Lyoko Minus One]]'', X.A.N.A. possesses a bus full of students, teachers, and the driver and pits them against Yumi. When Aelita goes to the [[Forest Sector]] to deactivate the Tower, the Scyphozoa attacks Aelita, putting a virus inside her to control her mind. She enters the sector's Way Tower, and inputs [[X.A.N.A. (code)|a special code]] in the Tower's interface, making the Forest Sector disappear and the Tower with it, which turns the class back to normal. The group learns from this that X.A.N.A. also intends to destroy the sectors to cut off their access to the Transport Orb as part of its goal to wipe out Lyoko.
 
 
It launches a better attack on the Core of Lyoko in ''[[Tidal Wave]]''. It possesses food supplies to create a junk monster in the real world and makes the Digital Sea rise and submerge the Lyoko sectors, to block access to the Tower and the Transport Orb. It does this to ensure no interference while its monsters wipe out Lyoko. They return the sector to normal, protect the core, and shut down the tower.
 
 
X.A.N.A. tries to destroy the Supercomputer and the group in ''[[False Lead]]''. It hacks into a computer of a weapons manufacturer containing classified defense data and leaves a trail pointing to Jeremie's phone number, attracting two government agents. When the agents track Jeremie to the Factory and arrest him, X.A.N.A. possesses both of them for its true plan. It uses one to keep him away from the Supercomputer, while the other agent unplugs the Scanners and tries to destroy the Supercomputer, to get rid of Lyoko and the group all at once. The attack was stopped and Supercomputer was damaged, but was still functional enough to trigger a return to the past.
 
 
In ''[[Aelita (episode)|Aelita]]'', X.A.N.A. planned to distract the group using an activated Tower, while its monsters attack the Core of Lyoko undetected. But, unbeknownst to it at the time, Aelita and Odd secretly go on a trip to Sector 5 to access data about her father. Lucky for them, their unauthorized trip has allowed them to discover its plan and thwart it.
 
 
[[File:Sector destruction.jpg|thumb|The destruction of the Desert Sector.]]
 
In ''[[The Pretender]]'', X.A.N.A. possesses a flock of pixelized crows to attack the group in the real world. The birds critically injure Yumi and while Aelita deactivates the Tower, they attack Jeremie to stop a return in time and the Scyphozoa takes control of Aelita. The group fails to stop the brainwashed Aelita from wiping out the [[Desert Sector]], leaving Lyoko with two sectors left, the Ice and Mountain Sectors.
 
 
X.A.N.A. tries to destroy the Factory in ''[[The Secret]]''. It possesses a demolitions worker equipped with explosive charges and a detonator, planting them everywhere inside the Factory for maximum effect. The Tower was deactivated, but the Scyphozoa captures Aelita. If they go back to the past to get rid of the explosives, Aelita will still be in X.A.N.A.'s clutches. Yumi stops Aelita in time before she destroys another sector, while the unexpected William Dunbar disarms the detonator.
 
 
X.A.N.A. shoots [[Hallucinogenic Beam|a hallucinating virus]] using two Mantas into Ulrich and Odd in ''[[Temporary Insanity]]''. They suddenly act like they're fighting on Lyoko back on Earth, seeing and believing that they are on the Lyoko with their friends, and that anyone else are X.A.N.A.'s monsters. The virus also works the other way around while virtualized, seeing monsters as people they know at the academy. This is a scheme to keep the group busy while X.A.N.A. attacks the Core of Lyoko. Their affliction has been dispelled by Jeremie and the Core was protected.
 
 
In ''[[Sabotage]]'', X.A.N.A. tries to crash the Supercomputer's systems through sabotage. It possesses the gardener, has him sneak into the lab, and slightly scorch the memory cards in the Supercomputer with electricity. This act will cause the entire system to crash given time. X.A.N.A. also possesses tree roots in the park forest to hold them down and stop them from fixing it. The activated Tower being used for the attack is also taking up computing resources, which is stopping Jeremie from rebooting the system. Left with no choice, Aelita deliberately uses the Way Tower to destroy the [[Ice Sector]] and the activated Tower with it, giving the Supercomputer enough power to reboot. This leaves only the Mountain Sector left.
 
 
X.A.N.A. takes over Ulrich's virtual body to attack the Core of Lyoko in ''[[Nobody in Particular]]''. Jeremie tries to virtualize him directly into Sector 5. The attempt fails and separates Ulrich's mind from his body. Since his virtual envelope is now left without a mind, X.A.N.A. is free to take control of it. It upgrades the mindless Ulrich's weapons and makes it attack the Core of Lyoko, guarded by Mantas. Ulrich's body is devirtualized and reconnects with his spirit.
 
 
In ''[[Triple Trouble]]'', X.A.N.A. takes an opportunity to get rid of Odd. When testing a new power, Odd splits himself into three entities, which will disappear forever if they don't get to the Scanners to be fused back into one. It creates disastrous clouds of smoke from the ground outside that turns people to stone, planning to immobilize all three of them, so they can't get to the Scanners to be fused back together and he will disappear forever. The three successfully get to the lab and they deactivate the Tower.
 
 
X.A.N.A. creates a spectre of Jeremie to destroy the last surface sector in ''[[Double Trouble]]''. The clone attacks the real Jeremie to impersonate him and tricks Aelita, Yumi, and Odd into getting virtualized. The clone then uses the lab interface to bug up their virtual forms, making them powerless to stop the Scyphozoa from possessing Aelita. The real Jeremie fixes the bugging but they are too late to stop Aelita. She enters the Way Tower, and destroys the [[Mountain Sector]], completely cutting off access to the Transport Orb. With this development, X.A.N.A. is now free to attack the Core of Lyoko without interference. However, Jeremie completes his program to send the group to Sector 5 directly.
 
 
[[File:Xanapossessedwilliam.jpg|thumb|left|X.A.N.A. captures William's lost essence.]]
 
In ''[[Final Round]]'', X.A.N.A. wastes no time in attacking the Core of Lyoko. After the group initiates William, only he and Aelita are the only ones available to defend the Core of Lyoko at the time. During William's first mission, he gets cocky as he is fighting monsters. X.A.N.A. sees his power and uses the Scyphozoa to successfully possess him, and makes him go to the Core chamber. He stands at the head of a Creeper attack force focused on the Core of Lyoko. With their combined firepower, the monsters take out the shields layers one by one. Despite their efforts, they fail to stop X.A.N.A. from destroying the Core of Lyoko, which occurs by William's own hand, and seemingly puts an end to their interference once and for all. In the Digital Sea, William's virtual form floats in an empty limbo and is transformed into a darker version of himself.
 
 
===Season 4===
 
[[File:12 hello handsome.png|thumb|X.A.N.A.'s newest warrior.]]
 
X.A.N.A. has infected many supercomputers with [[Replikas]] to complete its plan for world domination, and retrieved and enslaved William from the Digital Sea, turning him into a powerful and loyal minion for his new master. X.A.N.A. still tries to stop them from hunting it down and destroying its Replikas on the network, by continuing to launch attacks on them, target the Supercomputer, and trying to destroy their virtual ship, the [[Skidbladnir]]. X.A.N.A. can use William to fight on Lyoko, send to Earth without activating a Tower, and deactivate Towers the group uses to infiltrate the facilities that hold its supercomputers. It also targets Franz Hopper, the biggest threat. X.A.N.A. deals with him by capturing Aelita and throwing her into the Digital Sea, knowing he would expose himself in front of its minions to save his daughter.
 
 
In ''[[William Returns|the starting episode]]'', X.A.N.A. sends William to Earth through the Scanners, which is possible without activating a Tower. He is sent after the group recreated Sector 5. William acts normal, then reveals that he is X.A.N.A.'s slave when he kidnaps Aelita. William virtualizes himself and Aelita into Sector 5, and takes her to an empty Desert Sector to throw her into the Digital Sea. When Odd saves her, William dives in to run back to his new master.
 
 
In ''[[Double Take]]'', William takes control of Jeremie's activated Tower for X.A.N.A. to use it. Jeremie uses a Tower to create a clone of himself for his own uses and knows how to protect his Towers from being taken over this time. But, X.A.N.A. has given William his own ability to affect towers, which he uses to influence the tower. They both fight for control, but William eventually overpowers Jeremie's defenses. X.A.N.A. has the Jeremie clone attack the group and William guards the Tower with monsters until they deactivate it.
 
 
X.A.N.A. creates a polymorphic spectre to kidnap Aelita in ''[[Opening Act]]''. It takes the appearance of Chris, the Subdigitals' drummer, and sends her to William on Lyoko. Jim and Chris end up fighting the spectre while the rest of the group deactivate the Tower.
 
 
X.A.N.A. takes control of the group's William clone in ''[[Wreck Room]]''. Jeremie tries to use a program to free the real William, but it malfunctions and bugs up files in the Tower that generates their William clone. This makes it vulnerable to X.A.N.A.'s influence and prevents deactivation. It takes control and the clone gets more aggressive and eventually attacks the group. They fix and deactivate the Tower in time.
 
 
While Jeremie constructs their virtual ship, X.A.N.A. attacks it in ''[[Skidbladnir (episode)|Skidbladnir]]''. It sends monsters and William to the new and reprogrammed Sector 5 on a mission to destroy the ship before it is fully constructed. The assault was only narrowly thwarted in the end.
 
 
[[File:Kongres.jpg|thumb|left|New monsters, Kongres.]]
 
In ''[[Maiden Voyage]]'', the group give their ship its first test run going into the Digital Sea. Their navigation is disabled during the trip, and they stumble upon a [[Replika|new virtual world]] in the network. X.A.N.A. introduces its new sea monsters in the Digital Sea to attack them, called [[Kongres]].
 
 
X.A.N.A. attacks with a spectre as Jeremie teaches Ulrich, Odd, and Yumi to operate the Supercomputer in ''[[Crash Course]]''. It knocks Jeremie out cold, leaving them unable to rely on him this time, and goes to capture Aelita to send her to William and a few monsters. They warn Aelita, defeat all of the enemies, and deactivate the Tower on their own without Jeremie's help.
 
 
X.A.N.A. counterattacks as the group investigate one of its Replikas that they discovered in the episode ''[[Replika (episode)|Replika]]''. It contains a small virtual world that consists entirely of the Forest Sector. Megatanks arrive to try and destroy their ship, which is their only connection to the Supercomputer. William also appears for a chance at capturing Aelita. They finish their mission in the end.
 
 
In ''[[I'd Rather Not Talk About It]]'', X.A.N.A. once again targets the Core of Lyoko. It possesses a wild pig to attack the group in the forest, and sends monsters and William to destroy the Core. X.A.N.A. also renders the activated Tower invisible as a trick to confuse them.
 
 
In ''[[Hot Shower]]'', X.A.N.A. attacks with a meteor shower. It takes control of a [[The Satellite|military satellite]] again, so it can use its laser to split a passing comet into shower chunks that will rain upon the Earth, aiming the bulk of them directly at the Factory to destroy the Supercomputer. X.A.N.A. also traps the Skidbladnir in a firewall, so it can capture Aelita when the Skid loses power and disintegrates at sea. They escape and try to deactivate the Tower, but they are occupied by monsters and William. Jeremie tries to hack the military satellite with Yumi's help to try and destroy the meteor, but X.A.N.A. is a flawless program while Jeremie is only human. Aelita takes a risk by having Odd devirtualize her, sending her back to the Factory where the meteor will hit. She gambles that X.A.N.A. wouldn't risk her death, because it needs to capture her alive. Her theory is proven right as X.A.N.A. destroys the comet with the satellite laser, saving the city, and giving up on its attack.
 
 
It targets the group and the Skidbladnir in ''[[The Lake]].'' Everyone but Yumi goes on a trip to a small island, where Jeremie can't connect to the Supercomputer. X.A.N.A. creates a lake monster from a spectre that projects lightning bolts to anyone coming near the water, while sending the Scyphozoa to drain the Skidbladnir's energy. It also sends William to protect the Tower. X.A.N.A.'s monster attacks the island with more intense lightning bolts, which eventually creates a lightning storm that will incinerate everything on the island. Aelita activates the Skid's shield defense program to destroy the Scyphozoa and stops the attack in time.
 
 
[[File:Bragging Rights robot spider image 2.png|thumb|X.A.N.A.'s robotic spiders.]]
 
In ''[[Lab Rat]]'', X.A.N.A. protects the supercomputer that holds [[Forest Replika|its Forest Replika]] from the group. Jeremie uses a "teleportation" process to send the group to the Replika's location in the real world. They connect the Skid to a Tower, and he sends them to [[Jungle Research Facility|the laboratory]] in the Amazon jungle that holds the supercomputer. While inside, they learn that X.A.N.A. has possessed scientists making [[Cybernetic Spider|cybernetic spiders]]. William takes out the warriors guarding the Skid, then enters and inputs the X.A.N.A. code into the tower's interface. This allows X.A.N.A. to take control of the tower and disconnect their ship, severing their link to the facility. The group is left with no choice but to retreat and abort the mission.
 
 
They set out to complete their unfinished mission in ''[[Bragging Rights]]''. X.A.N.A. activates a Tower to use the cybernetic spiders to deal with the teleported heroes, while it sends William and monsters after the Skid. Ulrich destroys the power supply, which starts to make the sector disappear, but a backup generator activates and regenerates the Replika. William comes back and monsters fire on the Skid. Odd ultimately defeats William single-handedly, takes out the spider robots, and destroys the supercomputer all by himself.
 
 
In ''[[A Lack of Goodwill]]'', William materializes himself from a Scanner while the heroes are busy infiltrating the next Replika, who is sent by X.A.N.A. on a mission to destroy the Supercomputer down below. However, the William clone shows up with Milly and Tamiya. The clone and the original fight each other, forcing the latter into the elevator. William instead goes to the lab interface in order to mess with the system. William uses the interface to shut off the Scanners, get rid of the clone, and shut down the Supercomputer's [[Supercomputer Cooling System|cooling system]] to make it overheat and melt down. X.A.N.A. sends new Shark monsters in the network to delay the Skid. William restarts the Scanners to retreat back to Lyoko. Aelita stops the overheating process in time and saves the Supercomputer.
 
 
[[File:Distant memory.jpg|thumb|left|X.A.N.A.'s minions prepare to target Franz Hopper.]]
 
X.A.N.A. lures Aelita to Lyoko by tricking her in ''[[Distant Memory]].'' It pretends to be Franz Hopper and sends her an electronic message, saying that he is expecting her on Lyoko, then her computer suddenly bugs up. Aelita goes and enters a [[Simulation Bubble]] containing a replication of Aelita's childhood home. By noticing that her mother wasn't programmed into the simulation, she quickly learns this is a X.A.N.A. trick. William was waiting for her inside to capture her. X.A.N.A. tries to trap her inside the simulation bubble, but Aelita uses Creativity to disperse it. The Lyoko Warriors try to protect Aelita, but William succeeds in throwing her into the Digital Sea. But suddenly, she is lifted from the sea by the real Franz Hopper, who appears as a floating blue bubble. William and the monsters are focused on eliminating Franz Hopper, but don't succeed. The group now realize why X.A.N.A. wants to throw Aelita into the Digital Sea. It knows it's the only way to get Hopper to expose himself.
 
 
X.A.N.A. launches a counterattack in their second trip to the [[Desert Replika]] in ''[[Hard Luck]]''. At [[New Mexico Research Facility|the military base]] where the supercomputer is located, X.A.N.A. activates a Tower to teleport Kankrelats into the real world to counter the intruders. In the facility, there lies an assembly line that makes motherboards and electronic implants. Ulrich manages to take out all of the Kankrelats and destroy the supercomputer by himself.
 
 
[[File:Hard Luck Kankrelat hits_fan image 1.png|thumb|Teleported monsters defending the Replika.]]
 
X.A.N.A. attacks when Jeremie rides in an armed fighter jet in ''[[Guided Missile]]'' for winning a contest. X.A.N.A. possesses the jet in order to use its weapons to target and destroy the Factory and the Supercomputer with it. X.A.N.A. also forces the jet to crash to get rid of Jeremie too. Ulrich defeats William and sets Aelita free to stop the attack and launch a return in time.
 
 
In ''[[Kadic Bombshell]]'', a glitch is created in the Supercomputer because of Odd bringing someone into the lab. The glitch causes problems with virtualization. Aelita goes in to check for pulsations and activated Towers. X.A.N.A. sends monsters and William to the location to capture her and push her into the Digital Sea, but Odd saves her.
 
 
In ''[[Canine Conundrum]]'', X.A.N.A. possesses Jeremie's robot dog in his room, and gives it the ability to replicate multiple copies of itself to attack the school. William and Tarantulas appear to guard the activated Tower on Lyoko. Aelita tricks William with a clone of herself, and gets to the Tower while he is distracted.
 
 
[[File:Spiked_orbs.jpg|thumb|left|200px|X.A.N.A.'s spiked orbs.]]
 
X.A.N.A. fights the group on the next discovered Replika of Sector 5 in ''[[A Space Oddity]]'', which is a [[Carthage Replika|copy of Sector 5]] and its supercomputer is on a newly built [[Space Station|space station]] orbiting Earth. X.A.N.A.'s purpose for taking it over is to manufacture small, metal spheres that grow spikes and burn through metal. Meanwhile, X.A.N.A. activates the Replika's defense mechanism, which charges a mass of energy that threatens to wipe out the Skid. Ulrich stops the mechanism by pressing the sector's key. X.A.N.A. uses the spheres to attack the ones who are on the space station. Odd and Yumi sabotage the supercomputer by breaking cooling pipes and short-circuiting it with water, completing their mission.
 
 
X.A.N.A. tries to destroy the Skidbladnir while at sea in ''[[Cousins Once Removed]]''. While Jeremie leaves a program for the shields running on his dorm computer, Sissi and Herb mess with it and unknowingly endanger them in the middle of a battle. Jeremie puts up a firewall, after which X.A.N.A. possesses Sissi and Herb to take over their meddling. It unleashes the [[Kalamar]] monster to attack the ship, while its pawns break through the firewall and disable shields and weapons. Jeremie cuts power to the building, cutting off Herb's connection to the Supercomputer and restore their defenses. They destroy the monsters and deactivate the Tower.
 
 
In ''[[Music to Soothe the Savage Beast]]'', X.A.N.A. kidnaps Aelita again by possessing her show manager, and sends her to Lyoko, surrounded by monsters and William. It also possesses Milly and Tamiya to delay the group backstage at the concert. They save Aelita and deactivate the tower.
 
 
X.A.N.A. uses the Scyphozoa to control Aelita again in ''[[Wrong Exposure]]''. It takes control of Principal Delmas to kidnap Aelita and virtualize her alone on Lyoko, then has the Scyphozoa possess her mind to make the brainwashed Aelita walk into the Digital Sea. Jeremie activates a program he made earlier to reboot everything inside of the virtual world and break her possession.
 
 
X.A.N.A. attacks the group at school in ''[[Bad Connection]]''. It uses the school's cell phone antenna to spread a virus to everyone's cellphone, turning anyone who answers them into crazy and violent people. It uses monsters to guard the Tower, and throws a bug into the virtualization program to make things harder for the group. Aelita deactivates the Tower in time.
 
 
[[File:Kolossus Code Lyoko.jpg|thumb|The mighty Kolossus.]]
 
X.A.N.A. fights the heroes in the next Replika in ''[[Cold Sweat]]''. This new Replika is an [[Ice Replika|Ice Sector copy]] and its supercomputer is located in a [[Siberian Research Facility|lab in Siberia]]. In this facility, X.A.N.A. is storing brains in test tubes for an unknown purpose. William gets teleported to the base by X.A.N.A. to deal with the intruders. Aelita enters the Tower that commands his teleportation, but then she realizes that the Tower should contain the programs that X.A.N.A. uses to control William. She hacks into the Tower's data and transmits it to Jeremie. After deactivating the Tower, William comes back to the Ice Sector Replika. When he is dispatched by the group, X.A.N.A. suddenly draws on the power of all the Replikas that it controls to create its most powerful and ultimate monster: "[[Kolossus|the Kolossus]]," a massive creature that resembles a fire elemental with a sword for a hand. It easily devirtualizes Aelita and Ulrich, and almost destroys the Skid.
 
 
[[File:ArcticRobots.jpg|thumb|left|X.A.N.A.'s robot army.]]
 
In ''[[Down to Earth]]'', X.A.N.A.'s plans for the world are revealed, and the group breaks William free from its control. Jeremie imagines a program for freeing William for good using the data gathered from the previous episode. They go back to the Ice Replika, in which they discover dozens of humanoid robots lined up like an army at the base. Jeremie realizes that its plan is to create an [[X.A.N.A.'s Robot Army|army of robots]] to take over all of humanity. X.A.N.A. activates the robots stationed at the base, and sends them after Odd and Aelita. William appears in the Replika and goes into the Digital Sea, but comes back up with the Kolossus. Jeremie tries to immobilize the Kolossus, but breaks free and takes out Yumi. The Kolossus to stomps on Ulrich. Aelita is sent back to the Skid unconscious, and the Kolossus moves toward the ship. It seemed that X.A.N.A. had won, but William is devirtualized by Odd, freeing him from X.A.N.A.'s control, and comes back to normal in the Scanners. With one blow, the Kolossus strikes the Skid into the Digital Sea, but Aelita was devirtualized in time. X.A.N.A. may have lost its most dangerous warrior, but it hardly matters. It is now at the peak of its power, controlling hundreds of Replikas and built a massive robot army prepared to take over the world.
 
 
[[File:XANA dying.jpg|thumb|X.A.N.A. being destroyed by Jeremie's own evolved multi-agent program.]]
 
X.A.N.A. has its last battle with the Lyoko Warriors in ''[[Fight to the Finish]]''. Franz Hopper arranges a meeting on Lyoko for the group just when Jeremie finishes his multi-agent program for wiping out X.A.N.A. for good. Knowing they plan its ultimate demise, X.A.N.A. activates a Tower to possess William, making him its slave again, to knock out Jeremie and unplug the Scanners. It also sends the Kolossus and a few Mantas to destroy the Lyoko Warriors and Franz. Yumi gets herself devirtualized to fight William in the real world. Jeremie sends the Transport Orb for Odd and Aelita, because the program has to be activated from Sector 5. Ulrich managed to defeat the almighty Kolossus, but the giant's body falls on him, devirtualizing him. At the Celestial Dome, they try to run the program, but the energy requirements are too great. Mantas are sent to attack, and Franz Hopper appears and uses his remaining strength to power the program while bearing their lasers. Aelita launches the program, but to her horror, her father is destroyed right in front of her eyes. The program launches a powerful energy force from the Core of Lyoko which seeks and destroys all monsters and spreads to all the sectors of Lyoko, including the activated Tower. X.A.N.A.'s spectre is forced out of William and writhes in agony. The multi-agent program exits Lyoko's floodgate and into the world network, it destroys all of X.A.N.A.'s Replikas on the net. X.A.N.A. screams in agony as its spectre in the real world is erased from existence as the Tower deactivates. Every trace of X.A.N.A. everywhere on the network has been completely annihilated, ending the threat of X.A.N.A. forever.
 
 
===Evolution===
 
 
[[File:Xana returned.jpg|thumb|left|A Tower activated, signifying the rebirth of X.A.N.A..]]
 
[[File:Xana returned.jpg|thumb|left|A Tower activated, signifying the rebirth of X.A.N.A..]]
In the live-action ''Evolution'' sequel, X.A.N.A. has revived, stronger than ever, through an unknown Replika called the [[Cortex (Replika)|Cortex]]. X.A.N.A. had injected its own [[Source Codes]] into the warriors in their last battle. It hides from the [[Tyron|inventor]] of the Cortex, and sends spectres to Earth and take its source codes back, so it will become powerful enough to gain complete control of the entire world network.
+
In the live-action ''Evolution'' sequel, X.A.N.A. has survived its demise in the previous series by hiding in the supercomputer that generates an unknown Replika, called the [[Cortex (Replika)|Cortex]]. X.A.N.A. causes strange bugs in the Kadic school's computers and short circuits, which compels the group to reactivate the Supercomputer and restore Lyoko, renewing their struggle with their old enemy.
 
X.A.N.A. resurfaces in the starting episode, ''[[X.A.N.A. 2.0]]''. It makes strange computer bugs and short circuits occur at the school, which compels the group to reactivate Lyoko to see if their old enemy has returned. A Tower activates and monsters start attacking. On Earth, it creates a spectre with Jim's likeness, and it suddenly grabs Ulrich and he starts getting very weak and ill. The group stops the attack.
 
 
In the episode ''[[Cortex (episode)|Cortex]]'', when the group reprograms the Skidbladnir and enter the Cortex, X.A.N.A. sends Krabs to stop them from accessing the core, but is met with failure.
 
 
In ''[[Spectromania]]'', X.A.N.A. sends a kid spectre to steal source codes. It manages to touch Aelita, Yumi, and Odd before the Tower was deactivated, but this was a ruse to hide a second activated Tower whose signal was masked by the first, which generates another spectre in Ulrich's form. Odd gets to Lyoko and deactivates the second Tower. X.A.N.A. has gotten back about 70% of its source codes now.
 
 
>X.A.N.A. battles the group in ''[[Miss Einstein]] ''when they test drive their new [[Megapod]] vehicle inside the Cortex. With the help of Laura Gauthier, the group is saved.
 
 
In ''[[Rivalry]]'', X.A.N.A. sends a spectre in the form of William and touched Yumi before it was discovered. On Lyoko, it sends three Tarantulas, making one of them invisible. Odd deactivates the Tower, but with its power at 75%, it is strong enough to relaunch another attack immediately. It disrupts the telephone network with a virus, rendering cellphones unusable. William and Ulrich cooperate together and deactivate the Tower.
 
 
In ''[[Countdown]]'', X.A.N.A. creates a polymorphic spectre to infiltrate the school and steal source codes. It touches Odd, and the event gives him speech problems as a side effect. On Lyoko, it creates [[Blok Wall|a wall of Bloks]] to block their access to the Tower. The spectre planned to take all of their codes in one fell swoop when they all arrive at the lab. Odd defeats the Blok Wall and deactivates the Tower before the polymorph could touch them. X.A.N.A. has now recovered 80% of its strength.
 
 
In ''[[How to Fool X.A.N.A.]]'', X.A.N.A. sends a spectre with hypnotic abilities after Yumi. At the time, Jeremie injects false source codes inside of Ulrich that will destroy any spectre that tries to take them. However, X.A.N.A. discovers this plan thanks to a bug that it planted. Ulrich touches the spectre and implants it with the fake codes, which destroys it before it touches Yumi. This causes X.A.N.A. to lose some of its source codes, which are likely transferred back to Ulrich.
 
 
In ''[[Rendezvous]]'', X.A.N.A. creates a spectre of Anthea Schaeffer, Aelita's mother, to take advantage of her feelings. On Lyoko, it uses two Towers that activate and deactivate in sequence to prevent the heroes from thwarting its scheme. It asks her to meet at the chapel through a message. They share a hug, in which the spectre touches her and steals her codes. Laura figures out the sequence and finds a window that allows Yumi and Odd to deactivate the Towers before Aelita loses all her codes. X.A.N.A. is at 80% power.
 
 
In ''[[Chaos at Kadic]]'', X.A.N.A. activates a Tower from the Cortex to put a virus in the school's computer system, messing up test scores among other problems. They destroy the monsters, and Yumi deactivates the Tower.
 
 
In ''[[Friday the 13th]]'', X.A.N.A. infects the Skidbladnir with a devastating virus. It activates a Tower in Sector 5 to cause lottery wins to happen all over the country as a diversion to buy time for the virus to be uploaded. Odd gets the infected ship out of Lyoko, and counters the virus with Laura and Aelita's help.
 
 
[[File:Confusion49.JPG|thumb|An army of monsters fighting Tyron's ninjas.]]
 
X.A.N.A. seems to malfunction in ''[[Confusion]]''. It keeps activating and deactivating Towers, causing spectres to emerge and disappear in moments, and its monsters instantly devirtualize. In the Cortex, an army of Krabs and Tarantulas fight against Tyron's ninjas in the core, and attack the Lyoko Warriors as soon as they arrive. It is revealed that a security update made by Tyron in the Cortex was the source of its interference, which it destroyed in the battle. This reveals to the group that Tyron has no idea that X.A.N.A. hides in his supercomputer.
 
 
In ''[[The Codeless]]'', X.A.N.A. sends a spectre in the form of a football player which goes after Odd and steals the last of his source codes. It is now up to 85% power and activates another Tower soon after, sending a spectre with the same appearance as the last one. Yumi and William go after the Tower, but they are confronted by a virtual clone of William created by X.A.N.A., who plays on his doubts about his place on the team. William overcomes his feelings and turns on the clone, allowing Yumi to deactivate the Tower.
 
 
The group complete their virus to inject into the Cortex in ''[[Obstinacy]]''. X.A.N.A. sends monsters to stop them, including Mantas that can now operate in the Digital Sea. When Aelita sees her mother in Tyron's lab through the webcam, they stop their plan.
 
 
[[File:The Trap (Evolution) 13.jpg|thumb|left|A spectre on Lyoko.]]
 
X.A.N.A.'s spectre gets caught in a trap by the group in ''[[The Trap (Evolution)|The Trap]]''. Jeremie plans to get source codes back from spectres, in which they create a situation were Yumi lures a spectre into a Scanner, and it works. Jeremie steals 4% of X.A.N.A.'s own codes through the spectre. It tries to escape, damaging the rest of the Scanners in the process. The spectre explodes inside and its residue gets virtualized as a living particle cloud. It puts Yumi and Ulrich into comas with its touch. Since the spectre was made to steal codes, it ignores the codeless Odd. With no codes in the virtual world, the spectre drags the unconscious Yumi to the Digital Sea. Jeremie transfers the source codes he has stolen to Odd, but they now compel the spectre to chase after him. Odd gets into the Tower, and enters the Lyoko code before it touches him. X.A.N.A. lost 4% power, and Odd is no longer codeless.
 
 
X.A.N.A. attacks using clones to confuse the group in ''[[False Pretenses]]''. It sends a polymorphic spectre that shape-shifts into each of the Warriors to steal source codes, and creates perfect clones of them in the virtual world, confusing them. Jeremie and Laura launch a program to make the clones glow, allowing the real ones to devirtualize the fakes, and deactivate the Tower.
 
 
[[File:XANA-William.jpg|thumb|William held by the Scyphozoa.]]
 
In ''[[Mutiny]]'', X.A.N.A. takes control of William again. Laura and William decide to act on their own to plant their virus immediately. They enter without much trouble, but he is then surrounded by Krabs. The Scyphozoa appears and implants its tentacles into his body, turning him into X.A.N.A.'s pawn once again. X.A.N.A. has the Scyphozoa hold him in its grasp the entire time, trying to steal their virus when it gotten uploaded into himself. The possessed William commands an army of Krabs and fights the group. Ulrich distracts him long enough for his tentacles to be cut, turning him back to normal.
 
   
  +
Furthermore, X.A.N.A. had injected its own [[Source Codes]] into the warriors in their last battle, which contain fragments of its power. It now sends specters to Earth to steal back its source codes from the heroes, and gradually recover its full strength and take over the world network again. At the same time, X.A.N.A. also keeps itself hidden from the owner of the Cortex, Professor [[Tyron]], so he does not do anything rash to purge it from his systems.
In ''[[Jeremy's Blues]]'', X.A.N.A. sets a clever trap for the group. Jeremie sends Ulrich and Odd in the Skid to investigate a data packet sent by an unknown source in the Digital Sea. Then, the ship gets caught in a trap. X.A.N.A. sends five Sharks to destroy the ship and the trap damages the holoweb, leaving them helpless. Aelita gets the two back to Earth, but the Sharks destroy the Skid. This incident has left both the holomap and the Superscan badly damaged. X.A.N.A. attacks with a spectre in Mrs. Hertz's appearance and sends Kankrelats that duplicate to hold back William and Yumi. The spectre gets some of Aelita's source codes. Jeremie quickly fixes the holomap, and they deactivate the Tower. X.A.N.A. is at 92% power now.
 
   
  +
[[File:Cortexball_dissapearing_.png|thumb|The disintegration of the Cortex, where X.A.N.A. now lives.]]
X.A.N.A. uses another spectre for a particularly offensive attack in ''[[Massacre]]''. It sends a spectre in the form of Mr. Rouiller, while Yumi and Aelita are on a mission inside of the Cortex. The spectre steals Odd's codes. X.A.N.A. has eight Bloks guard the Tower, and Megatanks and Krabs attack Aelita and Yumi. The spectre steals Ulrich's codes also. Aelita escapes and arrives on Lyoko to take out the Bloks. Aelita deactivates the Tower before the spectre takes Yumi's codes. X.A.N.A. has rendered Ulrich and Odd codeless, and is up to 95% full power.
 
  +
Throughout this series near the end, X.A.N.A. has gradually recovered 95% of its full power from the Lyoko Warriors, but the group have also diligently worked on a virus that would wipe out the Cortex and X.A.N.A. too. They were forced to implant the virus immediately, but Tyron shuts down his supercomputer to avoid losing all his work while the virus was uploaded.
   
  +
Unless Tyron finds an antivirus, X.A.N.A. will be rendered eternally frozen as long as the Cortex stays turned off. If Lyoko stays active, it will escape destruction again, so the group shuts down the Supercomputer, but will remain on guard if X.A.N.A. survives.
[[File:Cortexball dissapearing .png|thumb|left|The disintegration of the Cortex, where X.A.N.A. now lives.]]
 
In ''[[Ultimate Mission|the final episode]]'', the Lyoko Warriors are forced to implant their virus immediately which would wipe out Tyron's supercomputer, and X.A.N.A. with it. During their first attempt, X.A.N.A.'s current power level allowed its Mantas to destroy the Megapod and the whole group in mere moments, forcing them to wait twelve more hours to try again. They suffer interference from Tyron in the real world, but they succeed in entering the core. Tyron shuts down his supercomputer to avoid losing all his data as they planted the virus. Unless Tyron finds an antivirus, X.A.N.A. will be rendered eternally frozen as long as the Cortex stays turned off. If Lyoko stays active, it will still have a way of escaping, so the group shuts down their own supercomputer, but will remain on their guard if it turns out X.A.N.A. survived again.
 
   
===Chronicles===
+
===Code Lyoko: Chronicles===
 
In this alternate continuity, the events of the first four seasons are severely streamlined as the first book indicates. While the events of the prequel and the first season are followed relatively the same as before, the climax of the rest of the series is compressed into one event. Franz Hopper reveals himself to the group before any equivalent of ''The Key'' occurs. He informs the group how to destroy X.A.N.A., by launching the multi-agent program into the Core of Lyoko. Hopper sacrifices himself to provide the energy needed, while at the same time restoring Aelita's memories and informing the group about her mother.
 
In this alternate continuity, the events of the first four seasons are severely streamlined as the first book indicates. While the events of the prequel and the first season are followed relatively the same as before, the climax of the rest of the series is compressed into one event. Franz Hopper reveals himself to the group before any equivalent of ''The Key'' occurs. He informs the group how to destroy X.A.N.A., by launching the multi-agent program into the Core of Lyoko. Hopper sacrifices himself to provide the energy needed, while at the same time restoring Aelita's memories and informing the group about her mother.
   
As for X.A.N.A., the entity's core is destroyed. It is purged and ejected from Lyoko, left to drift in the network without its memories or core functions. Over the course of several months however, X.A.N.A. begins to gain strength back, and searches for a human vessel in lieu of a virtual world. Ultimately, it looks for a vessel that it can use to infiltrate Kadic without suspicion, so as to kill the Lyoko Warriors.
+
As for X.A.N.A., the entity's core is destroyed. It is purged and ejected from Lyoko, left to drift in the network without its memories or core functions. Over the course of several months, however, X.A.N.A. begins to gain strength back, and searches for a human vessel in lieu of a virtual world. Ultimately, it looks for a vessel that it can use to infiltrate Kadic without suspicion, so as to kill the Lyoko Warriors.
   
 
Choosing a girl known as Eva Skinner, X.A.N.A. began to settle into its new circumstances, and learned of the Lyoko Warriors researching the history of the Supercomputer. Seeing a chance to gain its strength back, X.A.N.A. befriended the group, but planned on destroying them from the inside out. Over a time period, it gradually gained enough trust that they "informed" Eva about the supercomputer, Franz Hopper, and their search for Anthea Hopper. Seducing Odd, X.A.N.A. managed to brainwash the boy, laying the groundwork for its return.
 
Choosing a girl known as Eva Skinner, X.A.N.A. began to settle into its new circumstances, and learned of the Lyoko Warriors researching the history of the Supercomputer. Seeing a chance to gain its strength back, X.A.N.A. befriended the group, but planned on destroying them from the inside out. Over a time period, it gradually gained enough trust that they "informed" Eva about the supercomputer, Franz Hopper, and their search for Anthea Hopper. Seducing Odd, X.A.N.A. managed to brainwash the boy, laying the groundwork for its return.
   
X.A.N.A. however, would later learn from Hopper's archives multiple shocking truths: that he had been made with altruistic purposes in mind, to be the Guardian of Lyoko and the First City. Moreover, he had been close friends with Aelita, a friendship Hopper encouraged as a way to teach him human emotions. However, he forgot about all this when he was corrupted by leftover coding from a dark zone program, Project Carthage, whose templates Lyoko had been created from.
+
X.A.N.A. however, would later learn from Hopper's archives multiple shocking truths: that he had been made with altruistic purposes in mind, to be the Guardian of Lyoko and the First City. Moreover, he had been close friends with Aelita, a friendship Hopper encouraged as a way to teach him human emotions. However, all this had been clouded when he was corrupted by leftover coding from a dark zone program, Project Carthage, whose templates Lyoko had been created from.
   
Shaken by this, as well as the emotions that had gradually crept up on him the longer he stayed in the Lyoko Warriors' company, X.A.N.A sought out an opportunity to speak to Aelita alone and share what he'd remembered. While rightfully wary of the AI, whose identity had by now been ousted, she nevertheless agreed. Appearing to her as a young man greatly resembling William, X.A.N.A spent many hours talking with her. But though they rekindled their former friendship, the discussion ended in conflict when X.A.N.A. mistook her reluctance to help him as a declaration of war. Leaving her, he began preparations to dominate the world.
+
Shaken by this, as well as by the emotions that had gradually crept up on him the longer he stayed in the Lyoko Warriors' company, X.A.N.A sought out an opportunity to speak to Aelita alone and share what he remembered. While rightfully wary of the AI, whose identity had by now been ousted, she nevertheless agreed. Appearing to her as a young man greatly resembling William, X.A.N.A spent many hours talking with her. But though they rekindled their former friendship, the discussion ended in conflict when X.A.N.A. mistook her reluctance to help him as a declaration of war. Leaving her, he began preparations to dominate the world.
   
 
Aelita, not giving up, pursued him. She persuaded him to listen to his original programming and fight off the virus still infecting him. X.A.N.A. would thus ally himself permanently with humanity, helping the Lyoko Warriors to defeat a terrorist group that was hoping to use Lyoko as a substitute for Carthage. While X.A.N.A. seemingly sacrificed himself to upload a self-destruction program that would delete Lyoko for good, his programming was salvaged by Aelita, who managed to recreate X.A.N.A. and bring him into the real world as a human.
 
Aelita, not giving up, pursued him. She persuaded him to listen to his original programming and fight off the virus still infecting him. X.A.N.A. would thus ally himself permanently with humanity, helping the Lyoko Warriors to defeat a terrorist group that was hoping to use Lyoko as a substitute for Carthage. While X.A.N.A. seemingly sacrificed himself to upload a self-destruction program that would delete Lyoko for good, his programming was salvaged by Aelita, who managed to recreate X.A.N.A. and bring him into the real world as a human.
 
==Abilities==
 
[[File:VIRUS_Logo.jpg|thumb|200px|X.A.N.A.'s eye symbol indicates its presence.]]
 
X.A.N.A. is a self-aware, powerful, and intelligent program based on a multi-agent system that controls electricity and acts like a virus. Lyoko allows it to command powers beyond any machine on Earth that are listed below:
 
 
===Virtual Worlds===
 
X.A.N.A. is connected to Lyoko from Sector 5. It keeps a hidden [[Pulsations|presence]] in the virtual systems and controls its functions from there. It was originally bound to the Supercomputer, but escaped into the world network beyond the [[Digital Sea]] using the [[Keys of Lyoko|Keys to Lyoko]] stolen from Aelita.
 
 
====[[Tower Control]]====
 
[[File:Tour carthage-1-.jpg|thumb|left|X.A.N.A. activating a tower.]]
 
X.A.N.A. can activate [[towers|Towers]] for its own uses. It can also take over Towers used by others, provided they are unprotected, and use many for advanced computing. Its operations can only be countered by deactivating its Towers. An activated Tower lets X.A.N.A. access the real world by sending living virus entities that it controls in the form of digital impulses that travel around networks, or as [[spectres]] into the real world, ghosts that act as physical forms to interact with real objects or [[X.A.N.A. Awakens, Part 2|become]] [[Is Anybody Out There?|dangerous]] [[The Lake|monsters]] to attack on Earth. In both forms, X.A.N.A. displays many powers and abilities through them.
 
 
[[File:Xana_spectre.jpg|thumb|170px|A spectre emerging.]]
 
In either form, X.A.N.A. can control electromagnetic forces. It can project [[X.A.N.A. Awakens, Part 1|electrical]] [[X.A.N.A. Awakens, Part 2|attacks]], cause [[Seeing is Believing|short]] [[Claustrophobia|circuits]], and create [[The Key|lightning]] [[The Lake|storms]]. X.A.N.A. can also harness [[Just in Time|ultrasound]] to cause earthquakes, [[Zero Gravity Zone|magnetic fields]] to alter gravity, and use [[Killer Music|other]] [[Attack of the Zombies|dangerous]] [[Bad Connection|viruses]] to affect humans directly.
 
 
X.A.N.A. can also infect and manipulate objects like a computer virus, called [[possession]] (machines, objects, natural forces, plants, animals, etc.), able to physically manipulate them at the atomic level, and keep them functioning to use for attacks on Earth. It later grows powerful enough to control humans. It alters their personalities and thought processes, turns them into pawns that follow its orders, and [[Pixelization|pixelizes]] them to grant abilities like spectral bodies, inhuman strength and speed, many electromagnetic powers, walking through walls, etc. Only Lyoko Warriors cannot be controlled. When their Towers deactivate, possessed objects return to normal and people have no memories of what happened.
 
 
X.A.N.A. also gained the ability to generate [[Polymorphic Spectre|polymorphic spectres]]. They are ghosts that have pixelated powers and can impersonate humans. From these spectres, it creates clones or polymorphs that can shapeshift at will. They disappear when their Towers deactivate and if virtualized into Lyoko, it won't need a Tower to exist on Earth anymore and can mimic the appearance, powers, and gear of Lyoko Warriors.
 
 
It can also activate towers to [[Materialization|materialize]] [[False Start|real]] [[A Bad Turn|monsters]] or [[Image Problem|clones]] through the [[Scanners]], [[Translation|teleport]] minions, activate [[X.A.N.A.'s Control Pendant|special]] [[X.A.N.A.'s Robot Army|devices]] it has built, or [[Deja Vu|stimulate minds]] with psychic visions through a shared link.
 
 
====[[Monsters]]====
 
[[File:XANA Monsters.png|thumb|left|X.A.N.A.'s monsters]]
 
X.A.N.A. programs deadly monsters on Lyoko. It can produce hordes of them, but only sends a few at a time to save machine resources. It uses them to fight enemies, guard Towers, and attack and destroy targets on Lyoko. Almost all monsters attack with [[Laser]]s. X.A.N.A.'s monsters include [[Kankrelats]], [[Bloks]], [[Hornets]], [[Krabs]], [[Megatanks]], and [[Tarantulas]], [[Creepers]] and [[Mantas]] in Sector 5, and [[Kongres]], [[Sharks]], and the [[Kalamar]] in the Digital Sea.
 
 
It also uses the [[Scyphozoa]], a monster that extracts digital memory and life energy from any person or object in Lyoko, or implant its virus to control Lyoko Warriors in the virtual world, making them do its bidding.
 
 
====Programs====
 
X.A.N.A. has other programming abilities, like [[Sector Alteration Program|altering the landscape]], [[Virtual Weather|virtual weather]], creating illusions, using [[Guardians]], [[Simulation Bubble]]s, or [[Network Firewall|firewalls]] to capture enemies, launching [[Hallucinogenic Beam|programs]] through monsters, and bugs and viruses. X.A.N.A. can also manipulating the exposed code of [[Missing Link|incomplete]] [[Nobody in Particular|or]] [[X.A.N.A. William|lost]] warriors at will, able to steal their memory, possess and modify them, and capture and turn them into loyal minions bound to its program. It can also program special vehicles, abilities, and weapons for them.
 
 
===World Network===
 
After X.A.N.A. used the [[Keys of Lyoko|Keys to Lyoko]] to escape from the Supercomputer, it explores the world network beyond the [[Digital Sea]], periodically returning to Lyoko to attack the group. Inside, X.A.N.A. lurks within to accomplish bigger plans and goals, planning to expand its power inside the vast network.
 
 
====[[Replikas]]====
 
[[File:Replika_outside.jpg|thumb|A Replika]]
 
Inside the world network, X.A.N.A. has taken over hundreds of supercomputers by infecting them with Replikas, smaller copies of Lyoko, linked to its program to expand its power. Each one is made of one sector and have the same capabilities, but with shorter range. X.A.N.A. uses Replikas to control bases and laboratories in the real world for its own plans, and counters intruders by using Replika towers to possess humans, activate deadly machines, or [[Translation|teleport]] minions. X.A.N.A.'s plan was to create a vast [[X.A.N.A.'s Robot Army|army of powerful robots]] to destroy humanity and conquer the entire world.
 
 
X.A.N.A. can also draw power from every Replika at once to strengthen its computing power to create the [[Kolossus]], the ultimate monster to use on any virtual world. It is a massive, fiery giant whose blows can damage the landscape, instantly devirtualize enemies, and destroy the Skidbladnir in seconds. It is invulnerable to attack, except for the two eye symbols on its head and arm, which have to be hit at the same time.
 
   
 
==Trivia==
 
==Trivia==
*X.A.N.A. was voiced by [[David Gasman]] in ''Ghost Channel'', in the American version of ''Code Lyoko'', the same actor who also voices [[Herb]], [[Jim]], and [[William]].
+
*X.A.N.A. was voiced by [[David Gasman]] in the English dub of ''Ghost Channel'', the same actor who voices [[Herb]], [[Jim]] and [[William]].
  +
*X.A.N.A.'s name was derived from [[Wikipedia:Xanadu (Citizen Kane)|Xanadu]] in the 1941 film ''[[Wikipedia:Citizen Kane|Citizen Kane]]''.<ref name="a">[https://youtu.be/xOU4AWH3pyY "Les secrets de Code Lyoko racontés par ses créateurs (et on sait pourquoi ils ont des grands fronts)"] - YouTube</ref> A similar, more explicit reference was in ''Code Lyoko'''s pilot ''[[Garage Kids]]'', where, although X.A.N.A. itself didn't exist yet, the virtual world was named Xanadu instead of Lyoko.
*According to YTV's Vortex block's host Paula (Code Lyoko was a show on this block and during commercial breaks Paula would often share bits of trivia), X.A.N.A. was once a good computer program until an evil virus corrupted it. Interestingly, she said this piece of information in the middle of season one, before season two even aired. No evidence was stated to prove this fact, as it implies that it was Franz Hopper's abuse of the return in time program that made X.A.N.A. evil, not a virus. However, the novel series states that it really was a virus that corrupted it in the end.
 
  +
**[[Sophie Decroisette]] also confirmed that X.A.N.A.'s name doesn't stand for anything.<ref>[https://www.catsuka.com/interf/forum/viewtopic.php?f=4&t=778&start=435 "Reply from Sophie Decroisette:] "... it's a name that emanates from Xanadu, the old name of Lyoko. So it's not an acronym...". CATSUKA. April 1, 2004.</ref>
*X.A.N.A.'s name was derived from [[Xanadu]], the virtual world in [[Garage Kids]].
 
  +
*[[Wikipedia:Big Brother (Nineteen Eighty-Four)|Big Brother]] from the 1949 book [[Wikipedia:Nineteen Eighty-Four|1984]] served as inspiration for X.A.N.A., specifically for X.A.N.A.'s symbol resembling an eye and the slogan from the book: "Big Brother is watching you".<ref name="a" />
*Since X.A.N.A. is basically a computer program, it is supposed to be genderless as neither male or female. However, everyone except Franz Hopper constantly addresses X.A.N.A. by male pronouns in the main series. This may be due to all nouns having genders in French, the show's original language. In ''Code Lyoko Evolution'', X.A.N.A. is rightfully called an "it" as genderless in the series.
 
  +
**X.A.N.A.'s symbol also resembles the logo of Tachibana General Laboratories from the anime ''[[Wikipedia:Serial Experiments Lain|Serial Experiments Lain]]'', which served as one of the main sources of inspiration for ''Code Lyoko'' according to [[Thomas Romain]].<ref>[https://www.bfmtv.com/people/l-histoire-mouvementee-de-code-lyoko-racontees-par-son-co-createur-thomas-romain_AN-202010010067.html ""Code Lyoko" arrive sur Netflix: l'histoire secrète de la série culte"]. BFMTV. January 10, 2020.</ref>
**X.A.N.A.'s name is used with male pronouns in Code Lyoko; whereas in Evolution, his name was genderless.
 
  +
**In-universe X.A.N.A.'s symbol is said to originate from Project Carthage.<ref>[https://en.codelyoko.fr/events/avantpremieres4.cl#questionsrponses_ "Preview of Code Lyoko season 4"] - CodeLyoko.fr</ref>
  +
*Sophie Decroisette revealed that the writers received pressure from higher-ups to personify X.A.N.A., which they repeatedly fought against and tried to avoid doing as much as possible as "we wanted him to be an entity that no one can represent".<ref name="a" /><ref name="b">[https://cdal.over-blog.com/article-interview-sophie-decroisette-partie-1-122826682.html "Interview - Sophie Decroisette, partie 1".] Ces Dessins Animés-Là qui méritent qu'on s'en souvienne. March 11, 2014.</ref>
  +
*In ''Code Lyoko'''s original graphic bible, X.A.N.A. was originally the supercomputer itself and not a multi-agent system.<ref>[https://en.codelyoko.fr/bible_graphique.cl "The Graphic Bible of Code Lyoko"] - CodeLyoko.fr</ref> It was said to have been discovered by Franz Hopper, who used it to build Lyoko as his own paradise. Hopper eventually disappeared during one of his visits to Lyoko, which was theorized as the cause for the bug that makes X.A.N.A. to want to attack Earth.
  +
*Since X.A.N.A. is a computer program, it's supposed to be genderless. However, everyone except Franz Hopper addresses X.A.N.A. by male pronouns in the main series. This originates from all nouns being either masculine or feminine in French, the show's original language, and there being no equivalent to "it".<ref name="b" /> X.A.N.A. is specifically referred to as a "programme" (program), which is masculine. Decroisette notably prefers describing X.A.N.A. as an "entité" (entity), which is feminine. She admitted the "a" at the end of its name made her see X.A.N.A. as female, though said program was a more accurate term.
  +
**In [[Code Lyoko: Fall of X.A.N.A.|Fall of X.A.N.A.]] as well as the trailer for [[Quest for Infinity]], X.A.N.A.'s pronunciations are female.
  +
*In the ''Miraculous: Tales of Ladybug and Cat Noir'' episode "Hack-San", the [https://miraculousladybug.fandom.com/wiki/Hack-San_(sentimonster) titular sentimonster] looks almost exactly like X.A.N.A.. One of the directors of the series, Wilfried Pain, later confirmed this is a reference to ''Code Lyoko''.<ref>https://twitter.com/Winny_IRL/status/1435469679250874370</ref><ref>https://twitter.com/Thomas_Astruc/status/1435565392873807874</ref>
   
 
==Gallery==
 
==Gallery==
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2 xana's up to something.png|Appearing on multiple screens at once.
 
2 xana's up to something.png|Appearing on multiple screens at once.
 
7 xana the nano virus.png|The nano-viruses created by XANA attacking memory cells.
 
7 xana the nano virus.png|The nano-viruses created by XANA attacking memory cells.
2011-10-03 2059 001.png|XANA's [[spectre]] on Earth.
+
2011-10-03 2059 001.png|XANA's [[specter]] on Earth.
 
Secondaires 0054.jpg|XANA taking [[possession]] of [[Jean Pierre Delmas]].
 
Secondaires 0054.jpg|XANA taking [[possession]] of [[Jean Pierre Delmas]].
 
tumblr lzepr1EMDM1qlvb12o1 500.png|XANA taking possession of a flock of crows.
 
tumblr lzepr1EMDM1qlvb12o1 500.png|XANA taking possession of a flock of crows.
XANA attacks Sissi image 1.png|XANA's Spectre about to possess [[Elisabeth Delmas|Sissi]].
+
XANA attacks Sissi image 1.png|XANA's Specter about to possess [[Elisabeth Delmas|Sissi]].
 
XANA 579.jpg|Seeing through a [[monster]] or [[X.A.N.A.'s first robots|robot]] when attacking the real world.
 
XANA 579.jpg|Seeing through a [[monster]] or [[X.A.N.A.'s first robots|robot]] when attacking the real world.
 
25zqc5i.jpg|XANA taking possession of [[Aelita Schaeffer|Aelita]] and making her attack [[Ulrich Stern|Ulrich]].
 
25zqc5i.jpg|XANA taking possession of [[Aelita Schaeffer|Aelita]] and making her attack [[Ulrich Stern|Ulrich]].
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9F6D138F-56AE-464C-836D-D49EBBAC752A.jpeg|Principal Delmas possess by XANA kidnapping Aelita
 
9F6D138F-56AE-464C-836D-D49EBBAC752A.jpeg|Principal Delmas possess by XANA kidnapping Aelita
 
</gallery>
 
</gallery>
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  +
==References==
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{{Reflist}}
   
 
{{Character}}
 
{{Character}}
 
{{Monster}}
 
{{Monster}}
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{{LyokoNav}}
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[[Category:Characters]]
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[[Category:Villains]]
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[[Category:X.A.N.A.]]
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[[Category:Supercomputer]]
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[[Category:Things appear in game]]
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[[Category:Code Lyoko: Get Ready to Virtualize]]
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[[Category:Code Lyoko: Fall of X.A.N.A.]]
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[[Category:Code Lyoko: Quest for Infinity]]
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[[Category:Lyoko Conqueror: The Replika Experiments]]
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[[Category:Lyoko Conquerors]]
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[[Category:Keys of Lyoko]]
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[[bg:Ксана]]
 
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[[ca:XANA]]
 
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[[fr:XANA]]
 
[[fr:XANA]]
 
[[gl:XANA]]
 
[[gl:XANA]]
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[[id:X.A.N.A.]]
 
[[it:XANA]]
 
[[it:XANA]]
 
[[ja:ザナ]]
 
[[ja:ザナ]]
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[[sr:Ксена]]
 
[[sr:Ксена]]
 
[[tr:X.A.N.A.]]
 
[[tr:X.A.N.A.]]
[[Category:Characters]]
 
[[Category:Villains]]
 
[[Category:X.A.N.A.]]
 
[[Category:Supercomputer]]
 
[[Category:Things appear in game]]
 
[[Category:Code Lyoko: Get Ready to Virtualize]]
 
[[Category:Code Lyoko: Fall of X.A.N.A.]]
 
[[Category:Code Lyoko: Quest for Infinity]]
 
[[Category:Lyoko Conqueror: The Replika Experiments]]
 
[[Category:Lyoko Conquerors]]
 
[[Category:Keys of Lyoko]]
 

Latest revision as of 22:04, 21 March 2024

"HAHAHAHAHA, YOU ARE GOING TO DIE! HAHAHAHA!"

–X.A.N.A. itself speaking to the Lyoko Warriors in Ghost Channel

"A multi-agent computer program I created. It has achieved self-awareness and autonomy, and it's trying to eliminate us now."

Franz Hopper explaining to his daughter about how he created X.A.N.A. in Aelita.

X.A.N.A. (or simply XANA) is the main antagonist of Code Lyoko.

It is an artificially intelligent multi-agent computer program created by Waldo Schaeffer in order to destroy Project Carthage, but its power and intelligence grew thanks to the Supercomputer's Time Reversion, allowing it to gain consciousness and grow hostile towards its creator and humanity as a whole, changing its purpose to conquering the world.

Waldo shut down the Supercomputer after realizing how corrupted his creation became but after a decade, was reactivated and seeks to destroy the Lyoko Warriors to prevent them from trying to destroy it by escaping the Supercomputer and infecting the global network. Despite succeeding in this and killing its creator, X.A.N.A. finally met its end when Jeremie Belpois activated his own multi-agent system designed to destroy all of XANA's Replikas and succeeding in eradicating the hostile program once and for all.

In the non-canon continuity, Code Lyoko Evolution, X.A.N.A. instead returned by infecting another virtual world known as the Cortex and planned to recover the source codes that it hid inside of Aelita Schaeffer, Ulrich Stern, Yumi Ishiyama and Odd Della Robbia, in order to regain control of the network again. However, after deactivating both the Cortex and Lyoko again before X.A.N.A. could regain all of its source code, the Lyoko Warriors succeeding in once again destroying XANA, with no chance of return.

Appearance

Xana

X.A.N.A.'s true form in Fight to the Finish.

X.A.N.A. is a computer program that has neither physical or digital form. It keeps an unseen presence inside Lyoko's systems and generates red, pulsating energies that run through the Lyoko Wires when activating a Tower. The specters it manifests into the real world are black, ghostly entities that are extensions of its multi-agent system and are the closest thing it has to physical existence.

XANA

XANA's only physical appearance

X.A.N.A.'s only real incarnation was in Ghost Channel, masquerading as Jeremie inside a Simulation Bubble meant to imprison Ulrich, Yumi and Odd. It manifested its presence into a monstrous caricature figure of Jeremie, with sharp nails, spiky hair, white glowing eyes and an unnatural aura. In The Key, X.A.N.A. appeared in the form of a massive, whirling specter escaping the Supercomputer above the factory. But the closest thing to a real appearance was in Fight to the Finish, while X.A.N.A. was being destroyed everywhere in the Digital Sea by Jeremie's multi-agent antivirus, the specter that was possessing William was forced out and became a giant entity with its eye symbol on the chest, screaming in agony before it disappears.

Personality

X.A.N.A. is an psychopathic, hostile and semi-sentient Artificial Intelligence based on a multi-agent system that is solely bent on world domination. It is incredibly intelligent, able to calculate attacks and schemes, build advanced technology, even predict behavior patterns to use to its advantage. However, it can only know theories and logical patterns due to its innate nature as a machine. X.A.N.A. can easily understand base emotions like anger, fear, jealousy, and desire, but is unable to grasp the complex nature of love, compassion, and friendship.

As specters on Earth, X.A.N.A. displays its true self. It acts normal to avoid attention, calculating when working to fulfill schemes, and is hostile, ruthless, and sadistic when attacking. It has also displayed arrogance, mocked its enemies, and shown begrudging respect on rare occasion.

As the series progresses, its power, intellect, and motives evolve and become more complex. At first, X.A.N.A. launches random attacks on its enemies (most likely to force more time reversions to launch and increase its power), while keeping the Supercomputer online to survive. As it grows in power, X.A.N.A. figures out how to escape the confines of the Supercomputer and into the world network, by stealing the Keys to Lyoko from Aelita's memory. Once it succeeds, X.A.N.A. infects other supercomputers around the world in order to build weapons and robot armies to take over the Earth, while working to destroy Lyoko and kill Franz Hopper in addition to fighting the team to eliminate all of its obstacles.

As a program, X.A.N.A. is a logical entity despite its extremely chaotic nature, acting only for its own benefit. It was determined to keep the Supercomputer online to survive before its escape and helped the team destroy the Marabounta, but only to keep Aelita's memory intact and save itself from the monster. Also, the team have used its own logical nature against it more than once, making it thwart its own plans by threatening things it values, such as in Hot Shower, where Aelita has Odd devirtualize her in order to give X.A.N.A. an ultimatum: either it allows the Supercomputer to be destroyed along with Aelita whom it desired to capture alive or destroy the meteorite threatening her and the Supercomputer, thus resulting in X.A.N.A. forfeiting its plan.

Relationships

Lyoko Warriors

The Lyoko Warriors are X.A.N.A.'s mortal enemies, thwarting its attacks at every turn. It considers them to be troublesome obstacles and attacks them relentlessly, would take any chances to get rid of them, and has no qualms about using them as tools at the same time. X.A.N.A. also has different views of each and every one of them:

  • Jeremie Belpois: X.A.N.A. targets Jeremie the most out of everyone since he is the only one who can use the lab interface and because it sees him as the source of the group's leadership. It believes that he is the reason for their high success rate. When X.A.N.A. made a clone of him, it remarked that it "was almost proud to resemble him", showing a begrudging respect for the brains of the group due to his high intellect.
  • Aelita Schaeffer: She is the only one out of the group who can deactivate its Towers, making her very dangerous. However, her unique abilities and connection to the past makes her valuable to X.A.N.A.'s larger objectives. From the Keys to Lyoko in her memory, destroying surface sectors, or luring out Franz Hopper, it always tries to capture and exploit her whenever possible as it views her to be very useful after she was materialized.
  • Yumi Ishiyama: It sees Yumi as one of the more mature and competent of the group. It uses her the most to accomplish its plans and always tries to devirtualize her the most out of the three core fighters.
  • Odd Della Robbia: X.A.N.A. just sees Odd as another annoyance. It even mocked him when its polymorph took his appearance after he suggested that it "turns into a wimp," but seems to respect him enough to have monsters listen to his orders when fighting the Marabounta.
  • Ulrich Stern: It knows Ulrich is the best fighter and usually fights by outnumbering him on Lyoko. It once took over his body when his mind was separated from it to attack the Core of Lyoko.
  • William Dunbar: X.A.N.A. noticed that William has the most strength and potential out of the Lyoko Warriors. It immediately used the Scyphozoa to possess him on his first trip to Lyoko and makes him its most dangerous minion in the last season. Even after he was freed, X.A.N.A. tried to manipulate him into rejoining its side in Evolution, showing it values his potential as a warrior and worthy agent.

Franz Hopper

He is the one that X.A.N.A. fears the most, being the one who created X.A.N.A. and understands how the program works as well as how to destroy it, along with the fact that he is the reason the team keeps surviving its most devastating moves. It considers him an even bigger threat than the Lyoko Warriors, so much that it was willing to spare Aelita and her friends from certain death because she is vital to drawing him out. X.A.N.A. is aware that Franz Hopper and the Lyoko Warriors working together can surely bring about its destruction.

Powers and Abilities

VIRUS Logo

X.A.N.A. is an extremely intelligent and powerful multi-agent system that has infected the Supercomputer that holds Lyoko and exploits its capabilities. It was initially bound to the machine, until it escaped into the network after stealing the Keys to Lyoko, which also lets it build Replikas in other infected supercomputers. Its capabilities are listed below:

Tower Control

Tour carthage-1-

X.A.N.A. activating a tower.

X.A.N.A. activates Towers, known by pulsations, to act in the real world. It can only be stopped by deactivating them. With Towers, X.A.N.A. can take over networks or manifest specters from its multi-agent system, which are ghostly extensions that let it interact with the real world.

On Earth, it can hack networks, control all forms of electromagnetic phenomena, and possess any targets (electronics, natural elements, inanimate objects, animals, etc.) like a virus to manipulate at will to attack the real world. After evolving further, X.A.N.A. can take over humans or manifest polymorphic specters to follow its orders on Earth as pixelized vessels with its spectral and electrical powers. Only the Lyoko Warriors cannot be controlled because being virtualized to Lyoko gives them resistance. Its vessels return to normal or simply disappear when their Towers deactivate, and victims do not remember what happened.

Also, X.A.N.A. can activate Towers to materialize or teleport minions to Earth through Scanners or Replikas, control technology it has built, or show visions through a psychic link.

Monsters & Programs

XANA Monsters

X.A.N.A.'s monsters

On Lyoko, X.A.N.A. virtualizes deadly monsters to fight enemies and attack targets, and the Scyphozoa to steal digital memory or possess warriors on Lyoko. It can also alter environments, create virtual prisons, modify incomplete warriors, plant bugs or viruses, program equipment and vehicles, etc.

Using its Replika network, X.A.N.A. can send the Kolossus, its largest and most powerful monster and the ultimate weapon to use on Lyoko or any of its Replikas.

Biography

Origin

X.A.N.A. was created by a computer scientist named Waldo Schaeffer, who later changed his name to Franz Hopper in order to hide his identity from his enemies, to destroy Project Carthage. Despite his efforts to throw them off his trail, his enemies learned of his activities and pursue him. To escape them, he uses time reversions to give him all the time needed to perfect his virtual world Lyoko to be a safe place to live. Consequently, this caused X.A.N.A. to evolve until it becomes self-aware. Once Franz Hopper and his daughter were virtualized, it rebels against them by trapping them in Lyoko and trying to eliminate them. Franz tries to reason with X.A.N.A. but it has grown too powerful and become a threat to mankind, forcing him to shut down the Supercomputer.

Awakening

18 evil crazy wires

X.A.N.A. controlling cables.

X.A.N.A. was reawakened when Jeremie reactivates the Supercomputer, discovering Aelita and Lyoko. It sends monsters after Aelita and activates a Tower to attack with electricity and machines, then manifests a lightning specter after those involved with Lyoko. Jeremie sends Odd, Ulrich, and Yumi to Lyoko to deactivate the Tower and let him continue his work on Aelita's materialization, knowing how to neutralize X.A.N.A, officially becoming the Lyoko Warriors.

TeddyGodzilla XANA attack image 1

X.A.N.A. using a specter to launch an attack.

While Jeremie works on materialization, X.A.N.A. launches random attacks on humanity and its enemies by using Towers to hack networks to control machines, generate electrical phenomena, or manifest specters to possess targets to bend to its will, while guarding its Towers with monsters and virtual traps on Lyoko. The group continue fighting X.A.N.A., thwarting its attacks at every turn and fixing the damage caused with time reversions.

When the heroes finally manage to materialize Aelita with Code: Earth, X.A.N.A. stole her memories of her life on Earth to bind her fate to the Supercomputer, putting her into a lethal coma when the team shut the machine down, which ensures X.A.N.A.'s survival for now.

Growing Power

New Order Charge up lasers image 1

X.A.N.A.'s new monster.

X.A.N.A. is somehow evolving and getting stronger, creating new monsters on Lyoko, displayed by the Tarantulas. It sends one of them which successfully defeats all three warriors, but they manage to outwit two of them guarding an activated Tower and thwart X.A.N.A.'s latest attack.

The heroes discover the Hermitage, which is owned by the mysterious Franz Hopper. Later, the group discovers a fifth sector on Lyoko where X.A.N.A. lives and all its data can be accessed, but it's guarded by Creeper and Manta monsters, and trap mechanisms linked to a countdown procedure. The team regularly venture there to mine through X.A.N.A.'s own data relating to the virus tying Aelita to X.A.N.A. with the hope of freeing her.

Unchartered Territory Ulrich sees the Scyphozoa image 2

The Scyphozoa stealing Aelita's memory.

X.A.N.A. develops greater objectives as its power grows. While still fighting the heroes, it wants to acquire the Keys to Lyoko inside Aelita's memory to gain access to the world network. To that end, X.A.N.A. creates the Scyphozoa to extract digital memory from anything and launches schemes to lure Aelita to Lyoko for its monster to capture her without interference. Until X.A.N.A. gets the keys, it has to be careful to keep her alive no matter what.

The group discovers that the returns to the past are making X.A.N.A. stronger, confirmed when it took control of the function to repeat the same day until it can possess humans, making them pixelized, empowered agents to attack with or follow its orders on Earth, like kidnapping Aelita to send to Lyoko. However, X.A.N.A. cannot possess Lyoko Warriors, since it could only control Jeremie to destroy the newly discovered diary of Franz Hopper, who copied the data beforehand and got virtualized to prevent further possessions.

X.A.N.A. and the heroes aid each other out of necessity on two occasions. When Jeremie created the Marabounta and went out of control, it sends monsters to protect Aelita and help the team destroy it, because it still needs Aelita intact. Then, when the Supercomputer's nuclear battery fails, putting it and Aelita at risk of dying, X.A.N.A. possesses a criminal to steal another and kidnaps Jeremie to make him change the battery, since it knows they both have an interest in keeping the machine online. Once he puts in the battery, X.A.N.A.'s pawn tries to kill him and fails.

Clone polymorph

A polymorphic specter.

As more proof of its growing power. X.A.N.A. can manifest polymorphic specters, ghosts with pixelized abilities that appear as clones of people or shapeshifters that transform at will. Since it cannot control Lyoko Warriors, this allows X.A.N.A. to use their identities to deceive them, ambush them on Lyoko, or impersonate Franz Hopper to gain their trust.

Later, the real Franz Hopper contacts the group and helps decrypt his diary, despite X.A.N.A.'s efforts to stop him in the former or steal their data in the latter. Following the decryption, the information reveals that Franz Hopper created X.A.N.A. and Lyoko, but also that Aelita is his daughter and he virtualized her to Lyoko along with himself.

The Key - X.A.N.A

X.A.N.A. frees itself from the Supercomputer in The Key.

Jeremie also learns from the diary what X.A.N.A. seeks within Aelita's memory and that she doesn't have a virus, but a missing fragment. X.A.N.A. uses a fake to lure the heroes into a trap that devirtualizes her allies and allows the Scyphozoa to successfully steal her memory and the Keys to Lyoko, giving X.A.N.A. everything it needs to escape the Supercomputer. Aelita seemed to perish as a result, but Franz Hopper restores her to life and the missing part of herself: the memories of her former life on Earth, at last making her fully human. However, X.A.N.A. is no longer bound to the Supercomputer anymore, making it more dangerous than ever.

Targeting Lyoko

Coreoflyoko

X.A.N.A.'s monsters attacking the Core of Lyoko.

X.A.N.A.'s multi-agent system has now expanded to the world network. It hasn't attacked the heroes since it freed itself, thinking it is beyond their reach. When Jeremie upgrades the Superscan to find X.A.N.A, it responds by sending monsters to attack the Core of Lyoko to wipe out the virtual world, intending to keep the heroes from discovering its network schemes. The group stops its assault in the end.

Codexana

X.A.N.A.'s code being entered

Having no more need for the Supercomputer, X.A.N.A. is free to launch attacks on Lyoko itself, which is the team's only means of fighting. To accomplish this, it targets the Core of Lyoko in the virtual world with monster attacks, while using diversions to keep the heroes busy or attacks the Supercomputer directly using possessed humans and other physical methods.

Additionally, X.A.N.A. also destroys all of Lyoko's surface sectors by using the Scyphozoa to possess Aelita with its virus code and make her input the code into the sector's Way Towers, allowing X.A.N.A. to erase the corresponding sectors completely. It takes these actions to make the Transport Orb inaccessible to the team. It succeeds in the order of Forest, Desert, Ice, and Mountain, but Jeremie finds the means to virtualize the team directly to Sector 5.

Xanapossessedwilliam

X.A.N.A. transforming William

Initially reluctant, the team decides to recruit William Dunbar. However, he gets cocky during his first mission, allowing X.A.N.A. to use the Scyphozoa to possess him. It puts William at the head of a Creeper army focused on the Core of Lyoko, who quickly destroy its shields with their combined firepower. When the warriors arrive, he defeats them all and successfully destroys the Core, wiping out Lyoko and rendering the team unable to fight X.A.N.A. now. William was left in the digital void, but X.A.N.A. retrieves and enslaves him.

World Domination Plans

12 hello handsome

X.A.N.A.'s newest minion

Through a message sent by Franz Hopper, Jeremie recreates Lyoko. Soon after they do, X.A.N.A. sends William to the real world from the Scanners to kidnap Aelita and throw her into the Digital Sea. The group saves her and defeats William, but know he is an agent of X.A.N.A. now. To avoid suspicion about his disappearance at the academy, the group create their own William clone.

X.A.N.A. has made William its general and most dangerous weapon. It has made him a fighter that is more than a match for any warrior, lets him command its monsters, and gave him the Black Manta to summon and ride on. He also has a copy of the Keys to Lyoko, allowing him to influence or deactivate Towers activated by others. Finally, X.A.N.A. can materialize him from the Scanners as a pixelized human without using a Tower for missions on Earth.

While X.A.N.A. is still determined to destroy the Lyoko Warriors and the Supercomputer, it decides Franz Hopper is the biggest threat. Since he's the reason the team always recovers and X.A.N.A. knows that Franz joining forces with the team would be the ultimate threat. To deal with him, it schemes to throw Aelita into the Digital Sea, knowing he would risk his life to save his daughter. Meanwhile, inside the world network, X.A.N.A. infects other supercomputers, putting Replikas inside them, smaller Lyoko copies. They are extensions that let it survive outside the Supercomputer and take over secret laboratories and military bases on Earth for its own purposes.

When the heroes build their own virtual ship, the Skidbladnir, to counter X.A.N.A.'s network schemes, it creates virtual sea monsters and the Rorkal Nav Skid for William to fight them in the Digital Sea. Inside Replika sectors, it defends itself by sending Lyoko monsters and William to attack and activates Towers to deal with the teleported heroes sent to its Earth facilities to destroy their supercomputers. It can also have William deactivate their Towers to quickly end their missions. Also, X.A.N.A. launches attacks and programs traps that specifically target their virtual ship to prevent any further interference but continues to fail.

Kolossus Code Lyoko

The mighty Kolossus.

Near the end of the series, X.A.N.A. teleports William to its Ice Replika base to fight the team, which allows them to access data on how it controls him, then uses the power of all its Replikas to create the strongest monster: "the Kolossus," a massive titan that can devirtualize enemies instantly. They manage to escape with their ship intact and discover that X.A.N.A. controls hundreds of Replikas in the network.

After which, Jeremie creates a program to free William and an incomplete one to destroy X.A.N.A. The heroes go back to the Ice Replika for the former task where they discover its plan to create weapons and armies of robots for world conquest. They manage to free William, but the Kolossus destroys the Skidbladnir. X.A.N.A. may have lost William, but still has the Kolossus and built an army capable of world domination. Jeremie's multi-agent program is their only hope of stopping X.A.N.A.'s evil ambitions.

The End of X.A.N.A.

Xana 1

X.A.N.A.'s final moments in the real world as its eradicated by Jeremie's Anti-X.A.N.A. Program.

X.A.N.A. engages its final assault when the group and Franz Hopper meet to launch their Anti-X.A.N.A. Program. It possesses William to knock out Jeremie and try to unplug the Scanners, hoping to destroy all its enemies using the Kolossus and Mantas. While Ulrich manages to defeat the Kolossus, Franz Hopper sacrifices himself to provide the energy for Aelita to launch the program, appearing as a swarm of agents that destroys all of its monsters before spreading to the other four sectors of Lyoko, then making its way out into the network where it destroys all its Replikas one by one.

As this happens, the specter possessing William is forced out of him, showing X.A.N.A. in agony and glitching out due to its entire multi-agent system being destroyed everywhere. Then, it finally fades into oblivion while its activated Tower returns to normal as the hostile program is erased for good. Ultimately, the Lyoko Warriors are successful in destroying X.A.N.A. forever and ensuring it will never return.

Other Continuities

X.A.N.A. reappears in the live-action Evolution sequel and the alternate continuity of the Chronicles novel series. It should be noted that neither of the two continuities are completely canon, as Evolution was disowned by the original showrunners, who confirmed that only a few of their ideas made it into the show and that the events within were not canon.[1][2] Similarly, while the novels were written with the original documents in hand, not all of their events are noted to be canon either.

Code Lyoko: Evolution

Xana returned

A Tower activated, signifying the rebirth of X.A.N.A..

In the live-action Evolution sequel, X.A.N.A. has survived its demise in the previous series by hiding in the supercomputer that generates an unknown Replika, called the Cortex. X.A.N.A. causes strange bugs in the Kadic school's computers and short circuits, which compels the group to reactivate the Supercomputer and restore Lyoko, renewing their struggle with their old enemy.

Furthermore, X.A.N.A. had injected its own Source Codes into the warriors in their last battle, which contain fragments of its power. It now sends specters to Earth to steal back its source codes from the heroes, and gradually recover its full strength and take over the world network again. At the same time, X.A.N.A. also keeps itself hidden from the owner of the Cortex, Professor Tyron, so he does not do anything rash to purge it from his systems.

Cortexball dissapearing

The disintegration of the Cortex, where X.A.N.A. now lives.

Throughout this series near the end, X.A.N.A. has gradually recovered 95% of its full power from the Lyoko Warriors, but the group have also diligently worked on a virus that would wipe out the Cortex and X.A.N.A. too. They were forced to implant the virus immediately, but Tyron shuts down his supercomputer to avoid losing all his work while the virus was uploaded.

Unless Tyron finds an antivirus, X.A.N.A. will be rendered eternally frozen as long as the Cortex stays turned off. If Lyoko stays active, it will escape destruction again, so the group shuts down the Supercomputer, but will remain on guard if X.A.N.A. survives.

Code Lyoko: Chronicles

In this alternate continuity, the events of the first four seasons are severely streamlined as the first book indicates. While the events of the prequel and the first season are followed relatively the same as before, the climax of the rest of the series is compressed into one event. Franz Hopper reveals himself to the group before any equivalent of The Key occurs. He informs the group how to destroy X.A.N.A., by launching the multi-agent program into the Core of Lyoko. Hopper sacrifices himself to provide the energy needed, while at the same time restoring Aelita's memories and informing the group about her mother.

As for X.A.N.A., the entity's core is destroyed. It is purged and ejected from Lyoko, left to drift in the network without its memories or core functions. Over the course of several months, however, X.A.N.A. begins to gain strength back, and searches for a human vessel in lieu of a virtual world. Ultimately, it looks for a vessel that it can use to infiltrate Kadic without suspicion, so as to kill the Lyoko Warriors.

Choosing a girl known as Eva Skinner, X.A.N.A. began to settle into its new circumstances, and learned of the Lyoko Warriors researching the history of the Supercomputer. Seeing a chance to gain its strength back, X.A.N.A. befriended the group, but planned on destroying them from the inside out. Over a time period, it gradually gained enough trust that they "informed" Eva about the supercomputer, Franz Hopper, and their search for Anthea Hopper. Seducing Odd, X.A.N.A. managed to brainwash the boy, laying the groundwork for its return.

X.A.N.A. however, would later learn from Hopper's archives multiple shocking truths: that he had been made with altruistic purposes in mind, to be the Guardian of Lyoko and the First City. Moreover, he had been close friends with Aelita, a friendship Hopper encouraged as a way to teach him human emotions. However, all this had been clouded when he was corrupted by leftover coding from a dark zone program, Project Carthage, whose templates Lyoko had been created from.

Shaken by this, as well as by the emotions that had gradually crept up on him the longer he stayed in the Lyoko Warriors' company, X.A.N.A sought out an opportunity to speak to Aelita alone and share what he remembered. While rightfully wary of the AI, whose identity had by now been ousted, she nevertheless agreed. Appearing to her as a young man greatly resembling William, X.A.N.A spent many hours talking with her. But though they rekindled their former friendship, the discussion ended in conflict when X.A.N.A. mistook her reluctance to help him as a declaration of war. Leaving her, he began preparations to dominate the world.

Aelita, not giving up, pursued him. She persuaded him to listen to his original programming and fight off the virus still infecting him. X.A.N.A. would thus ally himself permanently with humanity, helping the Lyoko Warriors to defeat a terrorist group that was hoping to use Lyoko as a substitute for Carthage. While X.A.N.A. seemingly sacrificed himself to upload a self-destruction program that would delete Lyoko for good, his programming was salvaged by Aelita, who managed to recreate X.A.N.A. and bring him into the real world as a human.

Trivia

  • X.A.N.A. was voiced by David Gasman in the English dub of Ghost Channel, the same actor who voices Herb, Jim and William.
  • X.A.N.A.'s name was derived from Xanadu in the 1941 film Citizen Kane.[3] A similar, more explicit reference was in Code Lyoko's pilot Garage Kids, where, although X.A.N.A. itself didn't exist yet, the virtual world was named Xanadu instead of Lyoko.
  • Big Brother from the 1949 book 1984 served as inspiration for X.A.N.A., specifically for X.A.N.A.'s symbol resembling an eye and the slogan from the book: "Big Brother is watching you".[3]
    • X.A.N.A.'s symbol also resembles the logo of Tachibana General Laboratories from the anime Serial Experiments Lain, which served as one of the main sources of inspiration for Code Lyoko according to Thomas Romain.[5]
    • In-universe X.A.N.A.'s symbol is said to originate from Project Carthage.[6]
  • Sophie Decroisette revealed that the writers received pressure from higher-ups to personify X.A.N.A., which they repeatedly fought against and tried to avoid doing as much as possible as "we wanted him to be an entity that no one can represent".[3][7]
  • In Code Lyoko's original graphic bible, X.A.N.A. was originally the supercomputer itself and not a multi-agent system.[8] It was said to have been discovered by Franz Hopper, who used it to build Lyoko as his own paradise. Hopper eventually disappeared during one of his visits to Lyoko, which was theorized as the cause for the bug that makes X.A.N.A. to want to attack Earth.
  • Since X.A.N.A. is a computer program, it's supposed to be genderless. However, everyone except Franz Hopper addresses X.A.N.A. by male pronouns in the main series. This originates from all nouns being either masculine or feminine in French, the show's original language, and there being no equivalent to "it".[7] X.A.N.A. is specifically referred to as a "programme" (program), which is masculine. Decroisette notably prefers describing X.A.N.A. as an "entité" (entity), which is feminine. She admitted the "a" at the end of its name made her see X.A.N.A. as female, though said program was a more accurate term.
  • In the Miraculous: Tales of Ladybug and Cat Noir episode "Hack-San", the titular sentimonster looks almost exactly like X.A.N.A.. One of the directors of the series, Wilfried Pain, later confirmed this is a reference to Code Lyoko.[9][10]

Gallery

References

  1. "Interview - Sophie Decroisette, partie 2". Ces Dessins Animés-Là qui méritent qu'on s'en souvienne. March 11, 2014.
  2. "Interview with Sophie Decroisette" - CodeLyoko.fr (2016)
  3. 3.0 3.1 3.2 "Les secrets de Code Lyoko racontés par ses créateurs (et on sait pourquoi ils ont des grands fronts)" - YouTube
  4. "Reply from Sophie Decroisette: "... it's a name that emanates from Xanadu, the old name of Lyoko. So it's not an acronym...". CATSUKA. April 1, 2004.
  5. ""Code Lyoko" arrive sur Netflix: l'histoire secrète de la série culte". BFMTV. January 10, 2020.
  6. "Preview of Code Lyoko season 4" - CodeLyoko.fr
  7. 7.0 7.1 "Interview - Sophie Decroisette, partie 1". Ces Dessins Animés-Là qui méritent qu'on s'en souvienne. March 11, 2014.
  8. "The Graphic Bible of Code Lyoko" - CodeLyoko.fr
  9. https://twitter.com/Winny_IRL/status/1435469679250874370
  10. https://twitter.com/Thomas_Astruc/status/1435565392873807874
ve Lyoko
Characters Franz HopperX.A.N.A.

Lyoko Warriors: Jeremie BelpoisAelita SchaefferOdd Della RobbiaUlrich SternYumi IshiyamaWilliam Dunbar

Locations Sectors: Ice SectorDesert SectorForest SectorMountain SectorSector Five (ArenaCelestial DomeCore ZoneData TunnelsSkidbladnir HangarHeart of Lyoko)

Other: Digital SeaVirtual Limbo

Hardware Factory Interface (Holomap) • ScannerSupercomputer
Virtual Objects Eye ScannerLyoko WiresMegaPodOverboardOverbikeOverwingSkidbladnir (Nav Skid) • Tower (Way Towers) • Transport OrbVirtual World Shell
Programs Annex ProgramAnti-X.A.N.A. ProgramAvatarCodes (LyokoEarthX.A.N.A.Scipio) • DeletionDevirtualizationDigital Genetic CodeEnergizeID CardKeys to LyokoLife PointMemory fragmentPulsationsSector Alteration ProgramSimulation BubbleSuperscanTelephoneVehicle Virtualization Program
Weapons Lyoko Warriors: KatanaLaser ArrowTessen FansZweihänder

X.A.N.A.'s Monsters: Circular LaserFlying MineHallucinogenic BeamLaserPulse Beam

Powers CatclimbEnergy BeamEnergy FieldsEnhanced MarksmanshipFeline ExecutionMonster RidingSecond SightSecond ViewShieldSuper SmokeSuper SprintTelekinesisTeleportation
Other Eye of X.A.N.A.GunshipVirtual Weather