A lifelong Batman and Superman fan, Bruce Timm practically grew up with a pen and sketch pad in hand. Completely self-taught, he began his animation career in 1981 when he landed a job at Filmation as a layout artist working on Blackstar and The Lone Ranger. In 1982, he joined Don Bluth Productions as an assistant animator on The Secret of N.I.M.H. Timm then returned to Filmation to work on He-Man and the Masters of the Universe and She-Ra Princess of Power. In 1984, Timm joined Marvel Productions as a character designer on G.I. Joe. Later, he served as a character designer on the series The New Adventures of Mighty Mouse for Ralph Bakshi Productions in 1987 and The Beany and Cecil Show for DIC in 1988. In 1989, Timm joined Warner Bros. Television Animation to be a storyboard artist and character designer for Steven Spielberg Presents Tiny Toon Adventures. Later, he was promoted to serve as a producer for Batman: The Animated Series, which premiered in 1992. He went on to work on Superman, which premiered in September 1996, and the next installment of the Batman series, Batman, which premiered in September 1997. Timm continues his work as a producer for Warner Bros. having helped to create the newest animated incarnation of Batman, the futuristic Batman Beyond, now airing on Cartoon Network. Timm also served as producer on the feature-length Batman Beyond: Return of The Joker before taking the helm as creator and producer of Justice League for Cartoon Network, which debuted November 17, 2001.