The New Adventures of Mighty Mouse and Heckle and Jeckle (1979)

A revival of Terrytoons' most popular characters, produced by Filmation several years after the end of Terrytoons in 1973. Mighty Mouse is an anthropomorphic mouse superhero, whose main powers are flight, super-strength and invulnerability. Heckle and Jeckle are a duo of trickster magpies. They look identical to each other, but one of them has a Brooklyn accent and the other one has a British accent. Filmation's series made two additions to the cast: the vampire duck Quacula (who kept failing to scare his housemate Theodore the Bear), and the villain Oil Can Harry's speedster sidekick Swifty (who had superhuman speed, but was not particularly bright or competent).