Generator Rex is an American animated science fiction television series created by Man of Action for Cartoon Network, with John Fang of Cartoon Network Studios as supervising director. It was inspired by the comic M. Rex, created by Aaron Sowd, Joe Kelly and Duncan Rouleau, and published by Image Comics in 1999. The series premiered in the United States on April 23, 2010, on Cartoon Network, and concluded on January 3, 2013.

Plot

Five years prior to the events of the series, an explosion occurred on Earth, causing microscopic machines called "nanites" to infiltrate the bodies of all its organic life. When activated, nanites mutate the biology of their hosts; living beings with activated nanites are known as Exponentially Variegated Organisms (E.V.O.). Rex is an amnesiac fifteen-year-old boy and permanent E.V.O. who, unlike most other E.V.O.s, lacks physical deformation but has forgotten his past. He is also able to control his active nanites, allowing him to manifest from his body various bio-mechanical abilities and powers. He also has the unique ability to deactivate nanites inside other E.V.O.s, effectively curing them of their mutations and returning them to normal. Working for Providence under Agent Six and White Knight, Rex uses his unique abilities to stop and cure rampant E.V.O.s.