I have no reason to claim expertise, but the whole imagery of demons is a lot more varied than this, or other figures, suggests. The morph expension does do something about the feet, and add a few possibilities, but there's a lot more which could be used. As has been suggested, there's the grotesque genitalia, not that I'd expect DAZ to sell a vagina with teeth. Less controversially, different feet such as bird-like (with really big claws), perhaps using the same ideas as the A3Horse freebie, rather than a whole new figure. There's various alternative horn-props out there. And it would be quite traditional to use different heads, far less humanoid. It's not just an Egyptian thing. Imagine something with a horse's head, a meat-eating, fire-breathing, horse with horns. {Yes, I had toasted cheese for supper last night.) And, on the other side of this whole Demon business, where's the BFG? (I don't object to DOOM...)