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:


Twenty Years Old
Aspen was brought up in a broken home. Her mother’s death when she was four-years-old left her father to raise four young children, three boys and Aspen, all by himself. Needless to say, her needs were often pushed to the side and she learned to rely mostly on herself and her art to get by. She got good, painting was like a sixth sense to her. By the time she was eighteen, she had several big scholarships and could afford almost any school she could dream of. However what she wanted was to get as far away from her small town as possible, what school she attended didn’t matter much at all. So, at the ripe age of eighteen Aspen set out to art school on a full scholarship. She wanted nothing more then to live out her life, quaint and unbothered. She wanted to learn about the most insane things, histories and cultures and magic... not that she actually believed that magic existed.