The Legion of Doom is a fictional group of supervillains led by Lex Luthor that appeared in Challenge of the Super Friends, an animated series that starred superheroes from DC Comics. The Legion of Doom's headquarters was the Hall of Doom, a facility located in an anonymous swamp. The Hall of Doom was capable of being lowered below or raised above the swamp water's surface, and could also be flown through the air via rockets if needed.
There were thirteen members of the Legion of Doom, being Luthor, Bizarro, Black Manta, Brainiac, Captain Cold, Cheetah, Giganta, Gorilla Grodd, Riddler, Scarecrow, Sinestro, Solomon Grundy, and Toyman.
In "It Takes a Village Idiot, and I Married One", Mayor Lois Griffin claims that Adolf Hitler is plotting with the Legion to assassinate Jesus Christ, so she could get taxpayer money for the sake of Lake Quahog. One of the legion's members admits to leaking the information to her. Of the members of the Legion of Doom, the Riddler is absent in this episode.
The Hall of Doom briefly appears in Something, Something, Something, Dark Side. It rises from the Dagobah swamp, but Luke Skywalker, played by Chris Griffin, says he doesn't have time for it, so it quickly retreats back.