Help with a Head

Posted in Custom Workstation

I am wanting to make a custom of Lucifer, but not a super-christian version of him, a more sinister non-angel comic-like version of him.

I was planning on using Annihilus as a base figure, but I'm not sure what to use for his head.
I want the head to be human looking, but very evil and demonic looking at the same time.

Any suggestions?

Then I was also wondering about what to use for a cape, as I do not want wings.
Something that seems demonic and flowing, like it was living, somewhat Vincent Valentine's cape, but I don't want to ruin an awesome $20 FF7 figure.

Same thing with MS Mephisto, I think his head would probably be good, but I don't want to ruin a $20 MS figure.