known as XANA, is an evil and powerful computer virus based on a multi-agent system. It is merciless, craves destruction, and serves as the central antagonist of the series. It was originally created by Franz Hopper to destroy Project Carthage: a military communications system that Franz Hopper had previously been involved with. He mentions that his motives were to prevent the French government from obtaining access to Project Carthage. Unfortunately, due to his repeated returns to the past, X.A.N.A. evolved until it achieved self-awareness, choosing to betray Franz and trap him and his daughter Aelita inside Lyoko. Franz has no choice but to shut down the Supercomputer to stop its rampage. After it was reawakened in the present day, X.A.N.A. continues to wreak havoc on Earth and displays no mercy towards those who stand in its way. It grows smarter and more powerful with every return in time, and can think of greater plans and goals beyond random destruction. X.A.N.A. has no actual physical form as a program. Instead, X.A.N.A. activates Lyoko structures called "Towers" to access the real world with virus extensions of its multi-agent system while remaining inside the Supercomputer, and can only be stopped by deactivating the Towers. On Earth, X.A.N.A. can manipulate and channel electromagnetic phenomena and hack networks or manifest ghostly spectres from outlets at will to possess objects or living things like a virus to bend to its will (usually marked with its eye symbol as a sign of its control) to wreak havoc or target its enemies. After evolving further, X.A.N.A. learns to possess humans or manifest polymorphic spectres to follow its orders as pixelized vessels with its spectral or electrical abilities. On Lyoko, it creates deadly monsters to fight enemies and attack virtual targets, and uses programs to alter environments, plant bugs or viruses, manipulate incomplete warriors, or create virtual objects. The only known physical incarnation of X.A.N.A. appeared in season 1, in the episode titled "Ghost Channel," where after having its disguise as Jeremy being exposed, he transformed into a demonic caricature figure of Jeremy and tried to kill all of the Warriors. X.A.N.A.'s voice was provided by David Gasman in this episode. As X.A.N.A. continues to increase its power, its ambition also develop throughout the series. It steals the Keys to Lyoko from Aelita to escape from the Supercomputer and access the world network. Upon its escape, X.A.N.A. becomes more