Iron Man is a classic comic book. In the movie adaption, Tony Stark is forced to create a life support suit to keep him alive after an accident, he decides to use the technology in his suit to fight crime.
They say the best weapon is the weapon that you don't have to fire. I say the best weapon is a weapon that you only have to fire once. That's the way dad did it, that's the way America does it, and it's worked out pretty well so far.