Elisabeth "Sissi" Delmas is a character from the animated television series, Code: Lyoko.
Sissi considers herself to be the most attractive girl at Kadic Junior High. She is attracted to Ulrich (who does not feel the same way) and is jealous of Yumi. Undoubtedly snobbish and somewhat spoiled (not to mention a control freak, as heard in "Teddygodzilla" when she is silencing the crowd in the gym), during Season 1 she only rarely showed a more emphatic side. However, she admits to Jim in one episode that all she wants is to be accepted by Jeremie and the others (her spoiledness and superiority complex proves to be an obstacle, however).
Her empathic side usually came out in tense situations, especially when she was trapped in a room with others. Examples of this are seen in "The Trap" and "Claustrophobia", and to an extent in "Log Book", but not in a similar situation in "Swarming Attack".
In Season 2, the gang has often had to rely on her as either a distraction or a tool of manipulation over the principal (her father). During this Season, Sissi has softened considerably, and she and the heroes have been exceptionally civil towards each other, almost friends. Despite her Earthly importance, Sissi has no comprehension (though much suspicion) of our heroes' alternate lives. She has never been in Lyoko (thinking it was a video game). However, commercials seem to suggest a future addition to the team. If this is indeed the case, Sissi is possibly the most likely candidate, along with Jim, who was most often the direct and indirect victim of XANA's attacks in Season 1 and Season 2.
Beginning with the Season 2 episode "Deja Vu", a possible relationship between Sissi and Odd has been suggested (although it was hinted at in the first season episode "Log Book"). This would make slight sense, as it has been confirmed that Odd will get a permanent girlfriend in Season 2. However, some fans have been angered by this.
Voice actor information
In the American dub, Christine Flowers provided Sissi's voice in episodes 1-4. Jodi Forrest provides her voice in the episodes after.