Tetsuwan Atom - episode 97 - 04 Dec, 1964

Planet Hyper is the most civilized planet in the galactic system. Now it chooses a pair of a human and a robot each from both the Earth and Planet War to have them fight against each other, and decides to destroy the loser's planet. Atom and Ponkotsu Tetsu, the safebreaker, are chosen to represent the Earth. (Source: Tezuka Productions)