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Aelita, we've done it. XANA's been destroyed. I'll bring you home now.

Jeremie informing Aelita in Sector Five that the program was successful in eradicating X.A.N.A.

XANA Program in action-1-

The Anti-X.A.N.A. Program leaves Lyoko after sanitizing it of X.A.N.A.'s presence, before moving onto the network to destroy the Replikas.

The Anti-X.A.N.A. Program is a multi-agent program created by Jeremie Belpois with help from Waldo Schaeffer. It was created for the sole purpose of completely eradicating X.A.N.A.


The program's purpose as a multi-agent system is designed to counter X.A.N.A.'s power as only a program as powerful as X.A.N.A. could ever threaten it, while also being poetically ironic due to X.A.N.A. itself also being a multi-agent system, which worried Aelita due to believing that the program itself could turn out as bad as X.A.N.A. if something went wrong with it, such as his previous failure with the Marabounta, despite the latter not being a true multi-agent system.

Regardless, Jeremie decided that destroying each of X.A.N.A.'s replikas one at a time was insufficient due to the hostile program having infected hundreds of supercomputers around the world and that it would take years to destroy them all and due to X.A.N.A. becoming more aggressive in its plans of eliminating any threats to its survival.

The program would carry out its directive of destroying X.A.N.A. by first sanitizing Lyoko of X.A.N.A.'s virus-like presence. From there, it would then leave Lyoko and move out into the Digital Sea where it would search-and-destroy every replika created by X.A.N.A. to weaken it and deprive it of a host computer. Thus, X.A.N.A. would begin to glitch out and evaporate into nothing as the last of its presence is erased from the network.


In order to destroy a program as powerful as XANA, the Anti-X.A.N.A. program required setting up in Sector Five's interface and demanded very high energy requirements, far more than what the Supercomputer could normally provide. When Aelita first tried to activate the program in Fight to the Finish, it failed due to a lack of energy. Franz Hopper chose to let the Mantas kill him so that his life energy could allow the program to become operational, so long as it meant he could drag X.A.N.A. down with him.

Upon doing so, the program manifested from the Core of Lyoko as a swarm of glowing, white spheres all moving around similarly to a swarm of insects that emerge from the south pole and exterminated all manifestations of X.A.N.A. that it comes across, such as its Monsters, before leaving Sector Five and scouring each of the four surface sectors in order to sanitize the digital world of X.A.N.A.'s presence to expel it from Lyoko and prevent it from returning to save itself. From there, the program would leave Lyoko and enter the Digital Sea where it would track down each of the Replikas and destroy them all until none remained, ensuring X.A.N.A. would have no Supercomputer to inhabit and leave it at the mercy of the Digital Sea where its code would be completely and utterly deleted by the network's immeasurable tides of information.

Season 4[]