In "The Incredible Hulk Returns", Dr. David Banner, a scientist who transforms into a green-skinned superhuman monster when enraged, believes that he has found a potential cure for his condition, but he is sabotaged by the inexplicable arrival of the arrogant warrior-god Thor, who has been banished from Valhalla. The two then team-up to battle a rising criminal organization. Bill Bixby returns as Banner and Lou Ferrigno reprises his role of the Hulk. Eric Kramer makes his first and only appearance as Thor and Steve Levitt stars as Donald Blake. This was also Jack Colvin's last appearance as Jack McGee.