Super Friends: The Legendary Super Powers Show

The Mask of Mystery (1x8)

Air date: Oct 01, 1984

Captain Mystery, a useless amateur super-hero, wants to join the Super Friends, but they decline his request. Afterwards, Luthor steals the computer controller disk from the Hall of Justice, and after setting up a trap for the Super Friends, Captain Mystery ends up being their only hope of defeating Luthor.