Originally Posted by spider-neil
What is Mark 4?
Mark 1 - Built this in a cave with a bunch of scraps
Mark 2 - Silver
Mark 3 - Gold + Hot rod red
Mark 4 - ???
The suit he jumps out the plane and lands in StarkExpo with. It's slightly different from the suit he fought Iron Monger in I believe. More of an off screen upgrade between IM1 ans IM2