Somewhere out in the deep space live the Herculoids. Humanoid Zandor, along with his wife Tara and son Dorno, lead a group of unique creatures: Zok the flying dragon, powerful simian Igoo, rhinoceros hybrid Tundro and two protoplasmic wonders named Gloop and Gleep. Together, they use their diverse super strengths to defend their utopian planet against attack from sinister invaders.

• Don Messick
• Virginia Gregg
• Mike Road
• Sparky Marcus
• Ted Cassidy
• Ted Eccles