2. Iron Man (Marvel Cinematic Universe)
When your superhero costume is the source of your powers, it's bound to be awesome. So the fact that Tony Stark's Iron Man armour also looks as cool as hell ensures it gets a high placing on this list. Despite the name, the armour is actually an alloy of gold and titanium and is spray-painted with red paint for a red/gold pattern that just works brilliantly. As well as looking cool, the fact that it enables Stark to fly, grants him super-strength and a vast level of physical protection, and is home to a mass plethora of cool weapons (missiles, repulsor rays, a targeting system etc) makes it one hell of an awesome costume.