Duncan Rouleau is an American comic book writer and artist, and is a part of the Man of Action Studios collective of creators (along with Joe Casey, Joe Kelly, Steven T. Seagle), who created the series Ben 10, that aired on Cartoon Network.

[1] Steven T. Seagle and Rouleau also created the Marvel Comics super-hero team Big Hero 6.

Their third professional credit was the original animation series Ben 10 which they created and sold to Cartoon Network.

Their second original creation for Cartoon Network, Generator Rex, has aired over forty episodes to date, launched a merchandise line, and crossed over with Ben 10 in 2011.

The 2014 Disney animated film Big Hero 6 is based on the Marvel Comics team co-created by Rouleau.