The Cuckoo Carnival Calamity - S1.E10

The gang visits the local carnival to see Harold ""Hal"" Hercules, the world's strongest teenager, but something has turned Hal into a monster with telekinetic eye beams. When the gang tracks him down, they find him in a strange trance. They manage to bring him out of it, and he tells the story of the Great Swami Zorak (no relation to Space Ghost's mantis foe). Zorak is the only possible explanation for Hal's odd activities, and the gang decides to keep an eye on the swami and expose him.