Ultimate Iron Man appeared in a handful of Marvel titles, appropriately named Ultimates. In that universe, Tony Stark is the usual business tycoon and inventor but he also has a brain tumor. That causes him to make a change in personality and become a different Iron Man. The armor was, of course, different and cosplayer BlackLink2811 has done one hell of a job bringing into to life. The details and paint job blow me away.
See another picture with a War Machine after the break.