The Legion of Doom is a fictional group of supervillains from the DC Comics universe. They often serve as adversaries to the Justice League, a team of superheroes. The group was first introduced in the 1978 animated series, "Super Friends," and has since appeared in various comic books, animated shows, and video games. Members of the Legion of Doom typically include well-known villains such as Lex Luthor, The Joker, and Cheetah. Their primary goal is to defeat the Justice League and achieve world domination. The Legion is characterized by its strategic planning and teamwork, often using advanced technology and cunning tactics to challenge their heroic counterparts.