Tetsuwan Atom (1980) - episode 12 - 16 Dec, 1980

A spacecraft crashes to the earth and a robot staggers burning from the wreck. Doctor Elefun contacts Astro, who rescues Goliath from the flames. Goliath is a mining robot from Mars, with his eyes on his chest. His head contains a neutron beam. Elefun has it removed for safety, but it is stolen. Goliath leaves and goes looking for his head, removing and trying on several other robot's heads. Daddy Walrus also searches for the head, discovering it being sold at a criminal auction. Skunk Kazi gasses the crowd and takes the head. he offers to return it to Skunk if he will destroy Astro. However, a tank with the head mounted on it fires on them while they fight and they are buried under rock. Walrus (as Sam Bannister) shoots it out with the criminals at their hideout, but Skunk gets into the tank and uses the neutron beam on the police. Astro dodges the beam and wrecks the tank and Walrus knocks out Skunk. Astro returns the head to Goliath, but the two fight for the head and the beam discharges, annihilating Goliath. (Source: Wikipedia)