Justice League - Season 1 - Eps 17: Injustice for All (2)
Exposed as a criminal, sentenced to prison, and terminally ill due to long term kryptonite exposure, Lex Luthor escapes and assembles a supervillain team consisting of Cheetah, The Shade, Solomon Grundy, Star Sapphire, Copperhead, and Ultra-Humanite to take on the Justice League, calling themselves the Injustice Gang. The Joker also becomes part of the team, but on his own choice. However, this gang proves short-lived as its major weakness proves no match for Batman's wiles.
About Justice League

Title: Justice League
First Air Date: 2001-11-17
Last Air Date: 2004-05-29
Status: Ended
Rating: 8.13/10 (from 504 votes)
Language: EN
Seasons: 3
Total Episodes: 50
Network: Cartoon Network
Genres: Action & Adventure, Animation, Sci-Fi & Fantasy
Production Companies: Warner Bros. Animation, DC
Synopsis
The long-awaited rebirth of the greatest superhero team of all time: Batman, Superman, Wonder Woman, The Flash, Hawkgirl, Green Lantern, and Martian Manhunter.
Cast

Kevin Conroy
Batman (voice)

George Newbern
Superman (voice)

Susan Eisenberg
Wonder Woman (voice)

Phil LaMarr
Green Lantern (voice)

Carl Lumbly
J'onn J'onzz (voice)

Michael Rosenbaum
The Flash (voice)

Maria Canals-Barrera
Hawkgirl (voice)