Episode Title:Demon in the Deep.Episode Description:The Fantastic Four successfully beat the criminal forces working for Dr. Gamma, and blow up the island with its secret weapons. While escaping, Dr. Gamma is infected by the radiation levels in the seabed and morphs into some creature. Johnny is flustered with being moved around and quits from the Fantastic Four. In the town Johnny goes to, there have been sightings of the Gamma Ray. Johnny defeats the Gamma Ray by himself, but he comes back with the hideous giant sea monster Giganto. Johnny rejoins the Fantastic Four. Ben succeeds in eliminating the sea monster. The Gamma Ray is defeated but not finished.