1966 Frankenstein, Jr. and The Impossibles Frankenstein, Jr. and The Impossibles is an American Saturday morning cartoon produced by Hanna-Barbera Productions in 1966. It premiered September 10, 1966, on CBS, and ran for two seasons he program contained two segments, which each served as a middle ground between Hanna-Barbera's traditional cartoon early output and its superhero-based late-1960s cartoons. Each episode would feature two segments with The Impossibles, and Frankenstein, Jr. in betwee