Skarbrand of the Forge, from the back. The base is a customized Eldar 60mm job with some green stuff. Skar himself is a modified Bel'akor, the Dark Master. I'm pretty satisfied with how he came out.
This is my response to the fact that Bloodcrushers are $25USD a head. I can get Chaos Knights for about $22 for five, and then 60mm bases for cheap as well. So for the price of less than two Bloodcrushers, I can get a squad of seven. The rest of the buddies need a bit of washing and then basing, but you get the general idea.