Diver 0

(from ebookjapan):

Leiji Matsumoto's gem of SF short stories. Bratenodon, a crater on the moon, is a graveyard for androids that have become obsolete and broken. But the androids have entrusted their dreams of returning to Earth alive to a child android, who has been reborn in a secret factory!

He vows to fight for the androids who have died here, and for the androids oppressed by humans on Earth, at the cost of his own life. And so begins the battle of Diver 0 against the humans!

Features the debut appearance of Captain Harlock, who is a supporting character in the story.