Xele

Xele was an AI and the leader of Organization XIII.

He was created when the player Keramory, better known at the time as Info_man, got infected with AIDA by Tri-Edge, in a battle with Ovan. Info_man broke open Ovan's left-arm case, releasing the virus inside. Info_man's character data was reset, and he was recreated as Xele.

Xele headed mass player killings of players who were on The World by the hands of the XIII. Xele was a cruel and merciless entity, willing to use brutal and last-resort tactics to get what he wanted.

Sometime later, after the second XIII event, Info_Man gave Xele's PC data away, and he joined the game staff under the name 'Lee Keramory.'

This AI was one of the first entities to start spreading AIDA in The World, and even though he worked to fight the virus, it was ultimately the actions of Xele and Ovan alone that caused the destruction of The World.