Elisabeth Delmas

Elisabeth "Sissi" Delmas is a popular student at Kadic, the boarding school she attends and lives in. She is a rather spoiled kid, being the daughter of Mr. Delmas, who is the principal at Kadic. Having such status, Sissi is often mean to others and is very nosy at times, but despite this, she has shown on many occasions that she actually has a caring side hiding beneath her bratty surface. She especially constantly interferes and pesters the Lyoko Warriors, most of the time to win Ulrich's affections. However, she admits in Holiday in the Fog that she is gaining their attention through her mean actions towards them, showing that she is not one to be ignored despite the fact the Lyoko Warriors are forced to keep their secrets. By doing so she is almost making enemies out of her would-be friends, instead of gaining any of their respect, much to her chagrin. At the end of the series, in Echoes, she achieves this at last and becomes an official friend of the group,  She is a major recurring character.

In When the Cold Breeze Blows Away, she serves as sergeant major of Grand Alliance in during USRAC War