Kick-Ass is a creator-owned comic book series written by Mark Millar and illustrated by John Romita, Jr. It is published by Marvel Comics under the company's Icon imprint. It is the story of Dave Lizewski, a teenager who sets out to become a real life superhero. His actions are publicized on the Internet and inspire others. He gets caught up with ruthless vigilantes Hit-Girl and Big Daddy who are on a mission to take down the gangster John Genovese.