Originally entitled Tetsuwan Atom ("Mighty Atom" or literally "Iron Arm Atom"), it was created by Osamu Tezuka, the artist whose style defined the "look" of anime and manga for decades to follow. It began life as a manga in 1952 and has been brought to television as an anime three times: A third Astro Boy series aired in 2003-2004, debuting on April 7, 2003 -- the date of Astro Boy's "birth" in the original manga. This version (the first not to be overseen by Osamu Tezuka, who had died in 1989) differs significantly in some aspects of the setting and Astro Boy's origins.