Mekkano the machine is rescued from the intergalactic prison by his automated ship with its electro-smasher and goes to get revenge on Zandor and the Herculoids. He launches waves of attacks with his mecho-tanks and when that fails, his mecho-spheres. Finally he flees to his ship and tries to destroy everyone with his electro-smasher, but Gloop and Gleep manage to capture him and they put him in the automated Prison Rocket back to jail.
Elenco: Don Messick , Virginia Gregg , Mike Road , Sparky Marcus , Ted Cassidy , Ted Eccles .