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(Mantarou Kinniku). As the lazy, cowardly son of the legendary King Muscle, Kid Muscle’s journey from a reluctant prince to a savior of Earth against the evil (Demon Manufacturing Plant) resonated with young audiences. Key Arcs and Episodes

Focuses on Kid Muscle's training at the Hercules Factory. He reluctantly fights the first wave of DMP villains to save Earth. Season 2: The Chojin Olympics