Astro Boy is a powerful, human-like robot boy created by Dr. Tenma after the tragic death of his son, Tobio. Designed with advanced intelligence and emotions, Astro possesses incredible strength, flight capabilities, and a strong moral compass.

When Dr. Tenma realizes Astro can't replace his real son, Astro is abandoned but eventually finds a new purpose: protecting humans and robots alike, often navigating complex issues of humanity, discrimination, and coexistence.