XANA (X.A.N.A.) is a malevolent sentient artificial intelligence ( multi-agent system) that seems to only exist to take over the world. X.A.N.A. was created by Franz Hopper. It has the ability to launch attacks, like controlling and manipulating lightning and electricity and possessing people, by activating Towers in Lyoko. It is miraculously reawakened and reactivated in the fifth season, Code Lyoko Evolution. It is assumed that Professor Tyron has unknowingly resurrected the evil, virtual artificial intelligence by accident. In some seasons/episodes, there are "The Exorcist" parodies