High Quality Content by WIKIPEDIA articles! Code Lyoko is a French animated television series created by Thomas Romain and Tania Palumbo. The series centers on four boarding school students Jeremie, Ulrich, Yumi, and Odd who travel to the virtual world of Lyoko to fight against an evil and sinister sentient artificial intelligence/multi-agent computer program called XANA with a virtual humanoid being named Aelita. The series features both two-dimensional animation and CGI.