Man of Action is a group consisting of Duncan Rouleau, Joe Casey, Joe Kelly, Steven T. Seagle. They are the creators of the Ben 10 series. They've also created Generator Rex as well as written episodes of Ultimate Spiderman and Avengers Assemble .
Man of Action has a website about their blogs and shows. Their name is displayed at the beginning of all the Ben 10 episodes.
Man of Action will return as executive producers for the Ben 10 reboot.