Greg Johnson was the story editor for The Incredible Hulk episodes "The Return of the Beast" and "Darkness and Light" and series one of X-Men: Evolution.
He also wrote The Incredible Hulk episode "Darkness and Light: Part 3" X-Men: Evolution episode "The Cauldron - Part 2" and "Ascension", was head writer and story for "Day of Reckoning" and "Dark Horizon" and wrote the story for Wolverine and the X-Men episodes "Hindsight" and "Foresight".
He wrote the screen play for Ultimate Avengers, Ultimate Avengers 2, The Invincible Iron Man, Doctor Strange: The Sorcerer Supreme, Next Avengers: Heroes of Tomorrow, Planet Hulk and Thor: Tales of Asgard.