While this is a solid enough custom, it's also underwhelming. I realize that the Anti-Christ is supposed to be unobtrusive, but, as a toy, that just doesn't have any "oomph"--he'd be a pegwarmer for sure. Here are a few suggestions as to how you might have spiced this up: you could have given him an alternate, swappable demonic head and hands (similar to McFarlane Toys' animated Mammon), a few little demonic imp buddies (like LCBH The Darkness), or some satanic accessories like a demonic throne/desk or a pentagram base.

I was not trying to come up with a commercial prototype figure here! Subtlety was the point!!
I like your suggestion of the throne/base , but I thought that would constitute a diorama in violation of the rules.
( I can also now convert him to another of my Doctor Who customs with a small addition! Heh!).
Lastly, I'm photographically challenged. Everything is shot on an IPad!

David Tennant can't be Antichrist because he's Scottish! Scotland was never part of the Roman Empire!

Lol! My wife is leaving comments B4 the contest even starts! 'Course, she can see the original!!