Episode 97
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: tezukaosamu.net
Aired 05/12/1964EP 97 - Episode 97

Astro Boy
In the distant year 2003, Japan is a technological utopia, and robots are everywhere. One such robot, Tobio, was built by the brilliant Dr. Tenma to replace his dead son. But when it soon becomes apparent that Tobio is an imperfect copy of his departed child, Dr. Tenma throws him out. He is rescued from the scrap heap by the benevolent Professor Ochanomizu, a crusader for robot civil rights. Now the little robot, renamed Astro Boy, is given a mission to defend Japan and the world from all manner of sinister threats. Using his seven super-abilities and 100,000 horsepower worth of strength to battle evil, Astro hopes to set an example to the world of the good which all robots are capable of.