Duncan Rouleau is an American comic book writer and artist, and is a part of the Man of Action collective of creators (along with Joe Casey, Joe Kelly, Steven T. Seagle), who created the series Ben 10, currently airing on Cartoon Network.
Rouleau has illustrated a variety of popular American comic books for Dark Horse Comics, DC Comics, Image Comics, Marvel Comics, and other publishers. He illustrated and co-wrote the 8-issue miniseries of The Metal Men in 2007 by DC Comics.
In 2006, Rouleau released his first original graphic novel, The Nightmarist, published by Active Images.