The New Batman Adventures is an American animated superhero television series based on the DC Comics superhero Batman, which aired on Kids' WB from September 13, 1997 to January 16, 1999. Produced by Warner Bros. Animation, it is a continuation of Batman: The Animated Series (1992–1995), serving as the third season of the show, and the third series in the DC Animated Universe. It was followed by Batman Beyond (1999–2001). The series was revamped from BTAS, replacing its art style with streamlined designs for more consistent animation, and to maintain similarity with the simultaneously running Superman: The Animated Series (1996–2000), with episodes airing on Kids' WB under the title The New Batman/Superman Adventures.

Justice League is an American animated television series which ran from November 17, 2001 to May 29, 2004 on Cartoon Network. The show was produced by Warner Bros. Animation. It is based on the Justice League of America and associated comic book characters published by DC Comics. It serves as a sequel to Batman: The Animated Series and Superman: The Animated Series, as well as a prequel to Batman Beyond, and is the seventh series of the DC Animated Universe. After two seasons, the series was rebranded as Justice League Unlimited, a successor series which aired for three seasons.