Bare hand - 25th Joe (can't remember which one)
The rest - Mark VI Iron Man

I recently got the new movie accurate Iron Man from the Fury of Combat set, so I had this one spare. Instead of it being useless fodder, I decided to trash it a little. I pulled off one of the shoulderpads, and swapped out a hand (like at the end of Iron Man 1). I drilled loads of small holes as bullet holes, swiped 60 grade sanpaper over it for the scrapes, then gouged at it for a bit for the dents etc. Then I just painted in the scratched areas with Citadel Chaos black, Bolt gun metal and Mithril silver.