Hercules

Hercules was an honorable gladiator robot slain by Pluto. in the manga, Hercules is visited by Photar, known as "epsilon" in the manga. He gives Hercules a letter from Pluto challenging him to a duel, and then offers to help him fight. Hercules declines, stating he would prefer to fight alone, as is his code of honor. when Pluto does arrive, Epsilon hides behind a pillar and watches helplessly as Hercules is destroyed, his last words being a false belief that he won and is the strongest. in the 80s series, the part where Hercules is visited by Epsilon is omitted entirely, and he is shown (at least at the end of part 2 of "the world's greatest robot") to be MUCH bigger than he is in the original manga. In the 1960s anime, the part with epsilon is also absent, and the fight is otherwise identical to the manga, except Hercules can apparently fly.

Apperances in episodes

 * The Rise of Pluto
 * Robotonia
 * Journey to Tomorrow