Astro Boy (2009)

Genre: Animation | Action | Family | Sci-Fi
Tagline: Have a blast.

Plot:
Set in futuristic Metro City, Astro Boy is about a young robot with incredible powers created by a brilliant scientist in the image of the son he has lost. Unable to fulfill the grieving man's expectations, our hero embarks on a journey in search of acceptance, experiencing betrayal and a netherworld of robot gladiators, before he returns to save Metro City and reconcile with the father who had rejected him.

http://www.imdb.com/title/tt0375568/
http://en.wikipedia.org/wiki/Astro_Boy_(film)