Tezuka Productions in the context of "Kimba the White Lion"

Astro Boy, known in Japan as Mighty Atom (Japanese: 鉄腕アトム, Hepburn: Tetsuwan Atomu; lit. 'Iron-Armed Atom'), is a Japanese manga series written and illustrated by Osamu Tezuka. It was serialized in Kobunsha's Shōnen from 1952 to 1968. The 112 chapters were collected in 23 tankōbon volumes by Akita Shoten. Dark Horse Comics published an English translation in 2002. The story follows the eponymous Astro Boy, an android young boy with human emotions who is created by scientist Umataro Tenma in the likeness of his son Tobio after the latter's death in an accident. Eventually, Astro is sold to a robot circus run by ringleader Hamegg, but is saved from his servitude by Professor Ochanomizu. Astro becomes a surrogate son to Ochanomizu who creates a robotic family for Astro and helps him to live a normal life like an average human boy, while accompanying him on his adventures.

The series has been adapted into three anime series produced respectively by the first incarnation of Mushi Production and its direct successor Tezuka Productions, with a fourth in development. The manga was originally adapted for television in 1963 as Astro Boy, the first popular Japanese animated television series, which pioneered and embodied the aesthetics that have characterized anime in general. After enjoying success abroad, Astro Boy was remade in the 1980s as New Mighty Atom, known as Astroboy in other countries, and again in 2003. In November 2007, the titular character was named Japan's envoy for overseas safety.