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2013 Syfy Upfront

Grant Bowler ("Defiance"): Iron Man, because he's actually a man. I believe the machinery. He's a really awesome, deeply flawed character. I love my characters flawed.

Celebs Reveal Their Favorite Superheroes

Since "Iron Man 3" hits theaters this weekend, omg! asked a few stars about their favorite superheroes. Read on to see if you agree with their choices.