Chicago by Night, Vampires Lords of the Rack
The Infernal Slayer
Hired assassin of the Infernal Realm
This infernal menace has plagued Guy and Junfan for some time. He wears black armor and can apparently shapeshift, his favored animal is the Raven. He can turn invisible, and can use his mighty weapons along with magics from the dark abyss.
He is believed to have shown up when Guy rejected the coming of the Bride of Shaddad and thwarted the plans of VII. So far no one has been able to stop him, and he seems to have gone into hiding to eat souls and gain power.