The angel faction, and have them involved in a melee a trois of sorts. They would be against the demons, but have something against half-breeds as well. There would also be a small faction of angels who would seek to help or guide Dante.
The angel's name is Lionheart. His wings could be used for attack and defense. I.E, he can harden his wings into sharp steel and use the tips like a sharp razor. His civilian clothing is pretty incognito. He wears a dull burgeny coat, silver-grey long shirt, dark-blue jeans, and black gym shoes with a white stripe.
EDIT: Prefers to use his fists, sometimes feet, and wing. If not those, he is good with long sword