Astro Boy (新・鉄腕アトム, Shin Tetsuwan Atomu in Japan) is a color remake of the first TV series and the manga, it has 52 episodes (51 in the English version). Although mostly light-hearted, the series could be sad or have a darker tone at times. There are 2 English dubs, one from America and the other from Canada. The American version being the more well known.