Batman and Robin were essential members of the Super Friends, the animated Justice League-alike that assembled many of DC's greatest heroes (and Aquaman) into one crime-fighting force. The show was Batman's longest-running vehicle, airing in several forms from 1973 to 1986. A number of the nastiest DC universe villains went up against the team, including Lex Luthor and Gorilla Grodd. Batman was one of the core members, staying with the show throughout all of the different membership lineups, and there was a proposed spin-off cartoon starring just the Caped Crusader that never came to fruition.