X-O Manowar (Aric Dacia) is a fictional superhero co-created by writer and former Marvel Comics editor-in-chief Jim Shooter, artist Bob Layton, and Jon Hartz. Current Marvel Comics Chief Creative Officier Joe Quesada was a key creator in the origin of X-O Manowar as seen in X-O Manowar #0. The eponymous comic book series published by Valiant Comics has sold more than 8 million copies to date. X-O Manowar has also starred in a video game alongside Marvel Comics's Iron Man