Marty Isenberg was a supervising producer for the animated series Guardians of the Galaxy.
He wrote X-Men: The Animated Series episodes "Days of Future Past: Part 2" and "Savage Land, Strange Heart", Spider-Man: The Animated Series episodes "Sins of the Father Chapter 4, 9, 13 and 14" and "Partners in Crime Chapter 3", Hulk and the Agents of S.M.A.S.H. episodes "Planet Hulk: Part 1" and "Days of Future Smash, Part 2 and 4", Hulk: Where Monsters Dwell, Ultimate Spider-Man episodes "Contest of Champions: Part 3" and "The Spider-Slayers: Part 3" and Guardians of the Galaxy episodes "Road to Knowhere/Knowhere to Run".