It's no secret that 'Iron Man 2' arrived to eye-popping box-office sales. It is, after all, the second-biggest release of 2010 so far. Audiences at up the second installment of the popular Marvel comic book's big-screen adaptation for a few reasons: It had killer action sequences, an entertaining new villain in Whiplash (played by Mickey Rourke), and of course another winning performance from Robert Downey Jr.

Oh, yeah, and because Iron Man's sweet metallic suit totally ruled.

That red-and-gold bad boy is on full display today with 'Iron Man 2' (finally) arriving on DVD. In honor of the release, Moviefone gets the behind-the-scenes scoop on Tony Stark's armor from effects guru Shane Mahan, who supervised the suit design for both the first and second movies. Mahan, who began his career with movies like 'The Terminator' (1984) and 'Jurassic Park' (1993), reveals some of the secrets behind the 'Iron Man' suits and also how comic-book adaptations have changed over the course of his career.