Astro Boy (鉄腕アトム Tetsuwan Atomu?, "Mighty Atom", lit. "Iron Arm Atom"), sometimes referred to as New Mighty Atom (新・鉄腕アトム Shin Tetsuwan Atomu?), is a remake of the 1960s anime series of the same name(s); both series are adapted from the manga series by Osamu Tezuka.
This series placed more focus on Astro's robotic skills and had a somewhat darker storyline than the previous incarnation of the series. While mostly light-hearted, the series could be quite somber and sad at times. It was not uncommon in the series for robots or human characters to suffer for their actions or the misdeeds of others.
The series ran for 52 episodes (edited down to 51 episodes for the English versions).