S1, E6: A rebel army of gophers vows to overtake Mars. Marvin's canine companion discovers the plan during a golf game but can't communicate the information to his master. Without Marvin's help, it's up to K-9 to save the planet on his own. / Duck Dodgers and Cadet investigate space barbarians planning to invade Earth. While on the rogue planet, Cadet discovers a shiny rock that transforms him into a gargantuan warrior. Cadet defeats the barbarians and becomes their king but can't sustain his new physique forever.