Astaroth

You were born an angel; the first angel born with black hair. The other angels, all with golden hair, found you disgusting and evil. The head angel, Elizabeth, always had it out for you. One day, you accidentally bumped into another angel and that was enough. You were chained to a golden post and were to have your wings cut off before being thrown to hell. As the sword was brought down, you tipped back and plunged down to hell with your wings still damaged, but intact. Some demon dogs found you and dragged you to Astaroth, sat with his two highest demon soldiers. The soldiers looked at you with disgusting, but Astaroth looked interested. An angel with black hair and wings intact? He grinned, "You're finally where you belong, my dear". They injected you with demon poison, turning you into the first demon-angel. Your wings turned black, your angel grace remained but was now strengthened by a dark, twisted magic. You pick any powers you want, but you're good with a sythe!