Doctor Tenma made Astro Boy after he lost his son Tobi and created him in his image. He possesses super strength and a heart of gold. He possesses what's referred to as the Omega Factor or also called Kokoro, which allows him to feel emotions and thought processes identical to that of humans. His ultimate wish is to create a world where humans and robots live and work as equals. Astro's additional weapons can vary between series, although machine guns on his butt and his arm changing into a laser cannon are his most known weapons.