Nice, very well done indeed. Personally, I would've added some deep red into Asmodeus' appearance (I just think it would suit him). You seem to prefer giving them white hair out of all other choices. Is there a particular reason for this, or do you just like it more? Not saying it should be one way or the other, just curious about your choice that's all
great, I already feel inadequate enough looking through your gallery, and then I stumble across THIS. It's just perfectly phenomenal. The fact that so much of him is obscured by those (amazing) wings doubles the mystery and menace.