Dragonball Evolution is a 2009 superhero film based on the 1984–95 manga series Dragon Ball by Akira Toriyama. Directed by James Wong from a screenplay by Ben Ramsey, and produced by Stephen Chow, it stars Justin Chatwin, Emmy Rossum, James Marsters, Jamie Chung, Chow Yun-fat, Joon Park, and Eriko Tamura. In the film, the teenager Goku reveals his past and sets out to fight the evil alien warlord Demon King Piccolo who wishes to gain the powerful Dragon Balls and use them to take over Earth.