Justice League is an American animated television series about a team of superheroes which ran from 2001 to 2004 on Cartoon Network. It is based on the Justice League and associated comic book characters published by DC Comics. After its second season, it became Justice League Unlimited, and ran an additional three seasons.

Justice League Unlimited (or JLU) is the name of an American animated television series that was produced by and aired on Cartoon Network. Featuring a wide array of superheroes from the DC Comics universe, and specifically based on the Justice League superhero team, it is a direct sequel to the previous Justice League animated series. JLU debuted on July 31, 2004 on Toonami and ended with the episode aired May 13, 2006.

Forces of evil, chaos, and destruction await. Not even protectors like Superman, Batman, Wonder Woman, Green Lantern, the Flash, Hawkgirl or the Martian Manhunter may have a chance alone. But together as the Justice League, they are a metahuman force (and a hope) to be reckoned with. Written by RSchaff-2nd