High Quality Content by WIKIPEDIA articles! Generator Rex is an American animated television series for Cartoon Network and is created by "Man of Action" (a group consisting of Duncan Rouleau, Joe Casey, Joe Kelly, and Steven T. Seagle). John Fang of Cartoon Network Studios serves as supervising director. It is inspired by the comic M. Rex, published by Image Comics in 1999. The series premiered in the United States on April 23, 2010, on Cartoon Network. Generator Rex is rated TV-PG.