Justice League is an American animated series about a team of superheroes, which ran from 2001 to 2004 on Cartoon Network. The series is based on the Justice League and associated comic book characters published by DC Comics. It follows the adventures of Superman, Batman, Wonder Woman, Green Lantern, The Flash, Hawkgirl, and Martian Manhunter. The series was immediately followed by Justice League Unlimited (2004–2006).