Atlas (voiced by Greg Cipes) Is the secondary villian of Astro Boy and Astro's half-brother. He was once named Daichi who dreamed of going to the moon. But, he later joined a biker gang and ended up in a crash. He was brought back by Dr. Tenma, but ended up hating humans and wanted revenge of on his former step-father. He have the ablity to transform to his armor and back, and can use a energy blast from his suit.
- He's the secondary villain in Aaron meet Astro Boy.