Tetsuwan Atom (Dub)

In the year 2003, Professor Tenma is distraught when his son Tobio is killed in a car accident. He loses himself in his latest project, creating Atom, a robot boy programmed to be forever good. Upset that his Tobio-substitute can never grow up, Tenma sells Atom to Ham Egg, the cruel ringmaster of a robot circus. Atom meets the kindly Professor Ochanomizu, who adopts him, inspires him to become a crusader against evil, and eventually builds him a robot "sister," Uran. (Source: The Anime Encyclopedia)Atom is created by Dr. Tenma as a replacement for his human son Tobio following the boy's death in a car accident. Despite his best of intentions, Tenma soon becomes frustrated that Atom never grows any taller and continues to make mistakes as he learns to harness his robot powers. In a moment of mental weakness, Tenma sells Atom to the owner of the Robot Circus, but is soon rescued by the newly appointed head of the Ministry of Science, the kindly Dr. Ochanomizu.