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Code Lyoko Wiki

A beautiful flower like me has to be watered often.

–Sissi, in Uncharted Territory

Elisabeth "Sissi" Delmas is a student at Kadic Academy, and the daughter of the school's principal.

She is a frequent participant in many of the Lyoko Warrior's adventures where she's showing her much nicer side, however, due to the returns to the past she sadly never remembers any of these encounters.


Sissi is vain, snobby, and spoiled. Her jealousy and desire for admiration drive her to mock or scold others, ranging from younger classmates such as Milly or Tamiya to even her two closest 'friends' Nicholas and Herb. She is also very nosy, often willing to assert herself into any situation if she feels excluded or out of the loop.  

One of Sissi's defining traits is her one-sided obsession with Ulrich, believing she is the only one 'worthy' of him and vice versa. She is incredibly jealous that the rest of the Lyoko Warriors spend more time with Ulrich than she does and has taken to putting them down whenever given the chance, even though this only serves to make Ulrich dislike her even more. She is willing to resort to threaten, stalking, manipulation, taking advantage of desperately unfair bargains, and (in Cousins Once Removed) even planned to have the entire group permanently expelled from school by revealing their secrets to her father.  

Despite all this, there is another side to Sissi; one that often comes out during the life-or-death scenarios she often finds herself in during X.A.N.A.'s attacks. Her bravery and compassion come out during these moments; for example, she fixed Ulrich's broken arm and stayed with him in the broken down elevator in The Trap, she desperately tried to protect and comfort Milly in Attack of the Zombies, and was willing to let herself fall off the school roof in order to save Ulrich in Wreck Room. Sissi never remembers any of these events, and as such is unable to grow or learn from them. The rest of the Lyoko Warriors, however, do remember these displays of kindness and bravery, and have treated Sissi with hints of kindness in return because of it.  

In Holiday in the Fog, Sissi confesses to Jim that she wants to be a part of the Lyoko Warriors, and wishes they would let her be a part of their group. At the end of the series, in Echoes, she achieves this at last when they admit to her that they see her as a friend.  

Sissi is used to getting her way, often due to her skill at manipulating her father the principal. She is also very self-conscious about her intelligence; something the rest of the student body is well aware of and uses as a denial to any of her insults or threats.  

Features and looks

Sissi is pale-skinned and has long black hair. She wears golden hoop earrings, a yellow headband, a pink shirt that shows her midriff, a skirt over dark khakis and maroon shoes.



Not much is known about Sissi's family life, except that her mother is still alive according to an interview with head writer Sophie Decroisette and possibly divorced from her father.[1] She is approximately 13 to 14 years of age, and in the animated series she is in the eighth grade (and later ninth). In the original scripts of False Pretenses, Sissi reveals to Aelita that she and her mother go shopping every other weekend.[2]

Her only two "friends" before the series concluded were Herb and Nicholas. Herb is actually in love with Sissi; he even modeled his robot (Iron Sissi) after her, but she hated it because it looked extremely ugly.

As of Teddygozilla, she had won three of Kadic's annual beauty contests, starting at 11 years of age.

Seasons 1-5

Sissi had been seeking Ulrich's affections since the two were in pre-school, as revealed in Marabounta. In X.A.N.A. Awakens, Sissi is yet again trying to do just this. However, when Ulrich doesn't show up that night, she storms off to find him, running into Odd, who is following Ulrich, who kidnapped Kiwi. She goes with Odd to the factory and inadvertently stumbles upon the secret of Lyoko, and becomes a part of the gang. The next day, Sissi expresses her interest in going to Lyoko. However, after being targeted in X.A.N.A.'s attack, Sissi reveals the secret to her father and is kicked out of the group for betraying them. A return to the past is launched, and Sissi never remembers any of the events that happened.

During the first season, she made up many plans to get Ulrich to herself or try to join the gang. For example, in Log Book, she stole Ulrich's diary and read all about Lyoko, then extorted him into dating her. In Holiday in the Fog, she stayed back at school during the holiday to spy on Jeremie and try to figure out what he was up to. She also proved herself to be very kind and sincere when she wanted to be, and that she's a very good nurse and helpful during some X.A.N.A. attacks, in episodes such as Log Book, End of Take, and again in The Trap.

In Seasons 2-4, she still retained her gentle side, and wasn't as devious towards the Lyoko Warriors, but was still rather rude and obnoxious at times. At the end of the series, in Echoes, once the threat of X.A.N.A. has been eliminated, Sissi stumbles upon Jeremie's video diary in the lab after using a tracking device to find their hideout. She rants and raves to her father about everything, including her being possessed, but he doesn't believe her. After a return to the past, the group accepts Sissi as a friend.

Being on the good side of the team, Sissi stopped meddling with their business. In Code Lyoko Evolution, Sissi has a much smaller role, making her first main appearance in How to Fool X.A.N.A., and her second appearance in False Pretenses. She can still be seen in classes in other episodes though. Odd now has a weird habit of running into Sissi accidentally while walking, earning himself repeated lectures from her.

In False Pretenses, Sissi invites herself along to a shopping trip with Aelita and Yumi. While Yumi goes to help with an activated tower, Aelita stays at the school and bonds with Sissi a little, even convincing her to dress up in her clothes and a pink wig to trick the spectre on the prowl. After a return to the past, Aelita is very enthusiastic to have Sissi come along with them.

Voice Actresses

  • French: Carole Baillien
  • English: Christine Flowers; Jodi Forrest
  • Italian: Sonia Mazza (Season 1); Emanuela Pacotto (Seasons 2-4)
  • Portuguese (Brazilian): Rosely Gonçalves; Juliana Póvoas
  • Portuguese (European): Carla Garcia
  • Spanish (Latin American): Gaby Ugarte (Seasons 1-2); Adriana Nuñez (Seasons 3-4)
  • Spanish (European): Cristina Yuste
  • Dutch: Melise de Winter
  • Polish: Krystyna Kozanecka
  • Finnish: Tiiamari Mikkola
  • Russian: Larisa Nekepelova (Season 1); Olga Shorokhova (Season 2); Olga Golovanova (X.A.N.A. Awakens, Evolution)
  • Indonesian: Jessy Milianty


Elisabeth is a French and English variant of the Hebrew given name Elisheba (אֱלִישֶׁבַע), which roughly translates to "God is abundant". Sissi is a relatively uncommon diminutive of Elisabeth, and is likely a reference to Empress Elisabeth of Austria. Like Elisabeth Delmas, the Empress went by the nickname Sissi and was well-known for being obsessively vain. Delmas is a variant of the French surnames Dumas or Dumarty, which both mean "son of Martin", referring to Martin of Tours, a Catholic saint and one of the patron saints of France.


Season 1

Season 2

Season 3

Season 4


Appearances in Other Media

Video Games


  • Sissi is known to dislike her real name and prefers to be called Sissi rather than Elisabeth as shown in Uncharted Territory.
    • She shares her real name and nickname with Elisabeth of Bavaria, as well as her physical appearance.
  • Sissi originally had brown hair in Code Lyoko's graphic bible.[3]
Sissi (concept art)
  • Sissi reveals in the comic Yumi, Subdigitals Groupie that she took dance lessons when she was six years old, as well as piano and singing lessons when she was five years old; she also has had photos taken of her for catalogs.
  • Sissi is the consecutive winner of Kadic's beauty pageant, three years running.
  • She was the first character in the show to be possessed by X.A.N.A. as of A Great Day, and the only one ever to be possessed by Franz Hopper as of Contact.
    • She was also the second character to be attacked by X.A.N.A.; the first being Jeremie.
  • In Vertigo, Sissi told Ulrich that William is afraid of spiders. How she knows this is unknown.
  • Sissi was the first person to call Aelita "Mrs. Einstein".
  • When Sissi was a member of the Lyoko Warriors for a brief period in X.A.N.A. Awakens, she did not want to go to Lyoko, and was very frightened at the thought of being virtualized.
    • Sissi is also the first person to be dropped from the group after joining.


>> See all images of Sissi in Season 1

>> See all images of Sissi in Season 2

>> See all images of Sissi in Season 3

>> See all images of Sissi in Season 4

>> See all images of Sissi in Evolution