Code Lyoko Wiki
Code Lyoko Wiki
XANA Monsters

Monsters are simple programs created by X.A.N.A. to be its minions in the virtual world. They are directly virtualized into Lyoko and are primarily used to fight the Lyoko Warriors. According to, X.A.N.A. uses a base template which is used to make it easier to create new monsters.


X.A.N.A. virtualizes monsters to use as minions inside of the virtual world. In place of avatars, they are made to interact with Lyoko's sectors, and mostly uses them to fight the Lyoko Warriors and its enemies in the virtual world, guard its activated Towers, and attack targets that it wants deactivated or destroyed. When the goal has been lost or fulfilled, X.A.N.A. either makes them retreat or devirtualize them at will, proving its monsters are merely tools to do its bidding.


Monsters are created from a basic template program, with all their characteristics, allowing X.A.N.A. to create many monsters, all almost identical. This would correspond to the program created by Jeremie to virtualize vehicles. In some episodes, such as Marabounta, X.A.N.A. virtualizes creatures directly in the field as Jeremie does with the Lyoko Warriors.

X.A.N.A.'s monsters take up resources on whichever virtual world they fight on. It is capable of sending armies but continues to virtualize a few at a time to save machine resources. This is also demonstrated with the Kolossus, which can only be created using the combined power of multiple Replikas around the world network.

When monsters fall into the Digital Sea, they are deleted. The destruction of their virtual envelope corresponds to their complete disappearance within the virtual world. Most of them have relatively simple artificial intelligence.

Monster POV[]

Most monsters have the ability to aim their laser, though they do not seem to do so often. This is shown from the monster's point of view, which is dominated by a trisected, white circle. When targeting something, an upside-down, red triangle follows what they intend to shoot. When it locks on, the red triangle centers within the circle and three red lines connect each vertex of the triangle to the circle. Only a few monsters have directly demonstrated this targeting system, but it is safe to assume that others utilize the same system.

Powers and Abilities[]

X.A.N.A. equips the monsters accordingly with distinguished weapons and abilities that make each of them a force to be reckoned with in their own right. The primary means of attack they all have in common is their lasers. Every single variant of X.A.N.A.'s monsters are equipped with a pulse cannon capable of blasting amplified red energy bolts located anywhere on their bodies. These lasers generally manifest as narrow light beams as the standard contingent for any monster's firepower. However, depending on the monster, they can manifest in other forms, such as the flat vertical circular sawblade of the Megatank or the fire rings of a Blok. With every monster, the lasers generally and primarily deliver varying levels of concussive force while on rare occasions, they can simply be used for launching X.A.N.A.'s programs in a more direct manner. One example would be Temporary Insanity where X.A.N.A. used the laser stream fired from the combined forces of two flying mantas to infect Odd and Ulrich with a virus that brainwashed them into inverting their perceptions of both Earth and Lyoko.

List of Monsters[]


U - monsters bow

X.A.N.A.'s monsters bowing to the Lyoko Warriors, as seen in the episode Marabounta. L-R a Blok, a Kankrelat, a Tarantula, and a Krab.

  • Kankrelats: These monsters are X.A.N.A.'s weakest creatures, but arguably the most versatile. They usually attack in large swarms. They are much faster than Bloks, and are fairly hard to hit because of their small stature. Sometimes they attack from surprise.
  • Hornets: These are the first monsters that are capable of flight and are one of the few to have more than one attack. They can fire rapid-fire lasers from their stingers and spray poisonous acid from their heads. Cutting off their wings makes them completely immobile.
  • Bloks: They are one of X.A.N.A.'s most used monsters. Bloks are cube-shaped turrets with six crab-like legs and have three different attacks: standard laser, fire ring, and freeze ray (which can immobilize its target in ice for exactly three minutes if it doesn't cost the target the remainder of their life points as is has done with Ulrich on multiple occasions). However, with an eye on each side of their 'heads' (four in all), their major weakness is that hitting any eye can destroy them and turning them upside down makes them completely immobile. When they are stacked on top of each other like a wall, they shoot an absolutely devastating grand laser.
  • Krabs: They are arguably the tallest of monsters, the most versatile, and generally found in groups of two or three. They can use their legs to stab their enemies, and fire strong lasers from their eyes. In The Chips Are Down and Wreck Room, they demonstrated the ability to project pulse beams from underneath them. This is the only monster that can be destroyed by cutting off its legs.
  • Megatanks: These are one of X.A.N.A.'s most powerful monsters. They are huge, armored spheres with indestructible armored outer-casing. They attack with a powerful elliptical laser that can run straight in all vertical directions. To do this attack, it must expose its support ring the laser is fired out of where the Eye is under its armor, making it vulnerable in that moment.
  • Tarantulas: They were first introduced in New Order, where they were depicted as X.A.N.A.'s deadliest monsters due to having more life points than the others and their lasers doing twice as much damage. They are excellent shooters and are very durable. They can fire ray beams from the tips of their front legs that take twenty life-points per impact. As of Evolution, however, they now fire ray beams from their heads.

Sector 5[]

  • Creepers: They are exclusively found in Sector Five. Creepers are lethal snake-like monsters that attack by firing lasers from their mouths and make up for having less life points than other monsters by having much more powerful lasers, taking forty life points per hit.
  • Mantas: The strongest flying monsters. They are large manta ray-like creatures with strong lasers and hatch flying mines. They can fly but are slower than Hornets. In Cold War, X.A.N.A. shows that it grew powerful enough to send them to Lyoko's surface sectors and as of Evolution, they can survive within the Digital Sea, showing how much more powerful X.A.N.A. has become despite lacking its full source code.

Digital Sea[]

  • Kongres: Found only in the Digital Sea. They have the appearance of giant piranha eel monsters. They are the most common monsters seen in the Digital Sea and have only one laser weapon, which is fired from their eyes.
  • Sharks: Found only in the Digital Sea. Shark-like creatures that attack by shooting torpedoes from their mouths.
  • Kalamar: Found only in the Digital Sea. A special monster created to destroy the Skidbladnir. It attacks by latching onto its target and drilling into it.

Unique Monsters[]

  • Scyphozoa: One of X.A.N.A.'s most valuable tools. It has the appearance of a giant jellyfish and is almost impossible to destroy. It is the only monster than lacks the ability to attack but makes up for it by being able to drain the knowledge, DNA, and life points from a victim with its tentacles. It can also implant X.A.N.A.'s virus, possessing them to do its will. Aelita has been its main target, but it has attacked Yumi once and William twice.
  • Kolossus: X.A.N.A.'s largest and ultimate monster. Created by drawing computing power from all of the hundreds of Replikas that it has established all over the Internet. It has the appearance of a giant lava elemental being, with a giant blade replacing its left hand. Its body is indestructible and one attack from it results in instant devirtualization. The only way to destroy it was to simultaneously attack the Eye of X.A.N.A. on its head and its left sword arm.

Video Game Only Monsters[]


The dark monster.

Real-world Monsters[]

Unlike in Lyoko and its Replikas, X.A.N.A's monsters can't manifest in the real world unless it activates a Tower and these monsters are different from the ones inside the virtual world. Instead of simplier A.I. created to fight the Lyoko Warriors, these monsters are a direct result of X.A.N.A.'s multi-agent system appearing in the form of spectral impulses that appear out of electrical sockets/devices and usually either possess creatures/machines to act as the program's instruments of destruction or under certain circumstances, uses the Scanners inside the factory in order to allow its monsters to appear in the real world as physical incarnations.


  • It is confirmed in New Order that Odd is the one who comes up with the monster's names. Interestingly, there are several instances where X.A.N.A. has taken to using these names as well. It specifically refers to the Scyphozoa by name in a text to Jeremie in Ultimatum. Also, X.A.N.A.-William summons the Mantas by name in Opening Act. X.A.N.A. likely assigns no names to his monsters itself, using the ones that the kids come up with when communicating with them to use terminology they would understand.
  • Aelita, for an unspecified reason, seems to enjoy referring to the monsters as 'ladies.' This happens repeatedly throughout season four, beginning in Opening Act.


Concept Art[]

These designs were created by Michael Guarniere in 2005 after the third and fourth seasons were approved, but were ultimately scrapped.[1]


  1. "Conceptual Documents" -