In each episode of Challenge of the Super Friends that they appeared, the Legion of Doom would enact a plot against the Super Friends, only to be met with defeat by the end of the story. In some episodes, they would escape capture through a last-minute escape plan, often contrived by Luthor. Other times, the Legion of Doom would end up captured in the end. When the Challenge of the Super Friends season was originally conceived, it was named Battle of the Superheroes and featured the introduction of Captain Marvel to the Super Friends. The group that challenged the heroes was to be called the "League of Evil", led by Captain Marvel's nemesis Doctor Sivana. However, Filmation was producing Shazam! and The New Adventures of Batman which prevented the use of characters such as Mister Atom, King Kull, Beautia Sivana, Joker, Penguin, Mr. Freeze, and Catwoman. Early conceptual art drawn by Alex Toth also included Heat Wave, Poison Ivy, and Abra Kadabra.
Members: Bizarro Black Manta Brainiac Captain Cold Cheetah Giganta Gorilla Grodd Lex Luthor Riddler Scarecrow Sinestro Solomon Grundy Toyman
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Yeah, all of that concept art is just amazing! I love the lego-ized statues in a few of the...