Dude, that's awesome! I was thinking that maybe it was supposed to be like Doctor Doom. I know realize it is a lot more like General Grievous. This is an awesome name. I haven't read that much Expanded Universe material, so I imagine it's from that. It's wonderful to see all the little details put into the little gears and stuff.
I also love the axe he's holding and one arm appears to be a gun. Even the background is done wonderfully. My only complaint is that I think the picture is a little long. It's still wonderful, because you can always find new stuff in it. I just now noticed the blades on his front arms.