Professor Goodfellow's G.E.E.C. is the third episode of the first season of the Super Friends series. It featured the first appearance of Plastic Man, the famous elastic superhero that originally came from Quality Comics. His appearance here is very brief, and he doesn't show up until close to the end of the episode. Nevertheless, the popularity of his character lead to a spin-off series six years later from Ruby-Spears called The Plastic Man Comedy/Adventure Show. In this series, Norman Alden provided the voice of the character, whereas in his own series, he was voiced by Michael Bell.