Ambassador Atom (アトム大使, Atomu Taishi) is a manga short series written by Osamu Tezuka. It was originally serialized in Kobunsha's Shōnen [ja] magazine from 1951 to 1952.[1] The series is mostly noted for introducing the world-famous character Astro Boy.[2] The series would be released as Chapter 0 in the original Astro Boy tankōbon volumes published by Kodansha.