Mandarin (Marvel)

Mandarin is the archenemy of Iron Man, and has appeared as the main villain in a lot of Iron Man media. Using magic rings of ancient Chinese origin, he planned to take over the world and destroy Iron Man. In the latest Iron Man media, Iron Man Armored Adventures on Nickelodeon, the Mandarin's secret identity is that of a teenage boy named Gene Khan. Interestingly enough, he fosters a friendship with Tony Stark, Iron Man's secret identity.