This figure was part of a very large 40k army which was based on a 'tainted' World Eater theme, hence the white colors for the flesh. Obviously, you can see how this ties into the Ultraforge demon posted a few days ago.
Many of the vehicles have World Eater insignias that are corrupted. Any Aquila symbols also have scarring on them. The addition of the piles of skulls was also very fun.
All that extra metal certainly increased the weight on the vehicles, though! :-) This was an Apoc sized army, so look for tons more in the future!
More pictures are on my CoolMini post at http://www.coolminiornot.com/301447, so please vote on him!