Astro's parents primarily appear in Osamu Tezuka's manga, and the 1963 anime series. They live in a modern house like humans, and look after Astro, Uran, and Cobalt and Chiitan if applicable. In some stories, it is evident that they are younger than Astro in construction, and sometimes find that they have to learn from him. Astro's parents usually call each other, "dear" instead of names.