In Metro City full of Humans and Robots while Astro/Atom is a robot with a big heart his while his classic wear is in Black athletic shorts, a green belt, and red boots with jets for flight his a hero of the Metro City he live with Dr Ochinomazu as a caretaker of both Astro/Atom and his little sister Uran

PS:you can do crossover or do whatever you want you can be a Human, Robot or whatever