No one knows Azrael's origin, not even Azrael himself. The only thing that is known about his origin Azrael being an alien whose spaceship crash-landed sometime in the past over Mount Michelson in Alaska. His ship buried itself in the frigid Alaskan ice, and it lay undiscovered for an undetermined period of time until scientists from S.T.A.R. Labs discovered it, and the cryogenically frozen body of the winged alien being which lay within.
Using the research of the late scientist Elinore Stone, S.T.A.R. scientists successfully brought the spaceman out of his frozen state and into a world in which he didn't belong. Azrael possesses no memory of his former life, his planet of origin, his mission in space, or his true name. He was revived and soon met the New Teen Titans and Lilith, falling hopelessly in love with her. Lilith reciprocated those feelings only somewhat.
The Winged Man was tricked by the Church of Blood into thinking that he was Azrael, the angel of Death. Blood's Church eventually fell, and Azrael learned he was duped. It was he who dropped the broken-spirited Brother Blood off at a monastery when the villain's mind was broken by Raven. Azrael vowed to watch over Brother Blood, even in his broken state.
Azrael later aided the Titans again during the Technis Imperative conflict but has not been seen since that time.
Ariel alien body has natural birdlike wings on his back which allow him flight. He has enhanced agility and utilizes this while in flight.