Xezerom

Origin: a lesser demon who works under Morgirom, a legion leader and demon of Scorn. Born from the bile of a rotting behemoth carcass, he was imbued with the task of seeking out and making sure that contracts made on the Surface are met and paid in full. 

Personality: like most demons he is cruel and malicious- he has no conscience or moral guidance, so he acts quite like a spoiled child. The human world is of great curiosity to him, however, and he's often driven by this in his actions. He's very lazy although this won't stop him from attempting to torment your artist.

Abilities: He can posses human bodies and thus lend them odd abilities (super strength, keen senses, a 6th sense-like perception etc). In human bodies he'll begin to crave what humans need- but usually to a demonic degree- meaning raw meat will be of great interest to him. Lights act weird around him, flickering and all together going out (same goes with most electrical appliances and technology).  

Human form:

[img]http://25.media.tumblr.com/tumblr_lwh5mmCzjO1qbzvtjo1_500.jpg[/img]