Azrael

Once a mighty angel blessed by God, he was abandoned for trying to help a human. Cast from Heaven, he was sent to the mortal realm as a demon. The Archangel of Death became the Demon of Ruin, once a gentle giant that ushered souls into the afterlife turned into a wrathful war machine. Unwelcomed in both Heaven and Hell, he travels the mortal realm spilling blood of all those that approach him, except you... He's short-tempered and impulsive, quick to action and indestructible. His strength is unmatched and dangerous. Will you be able to remain alive by his side or will you eventually end up getting killed by him like everyone else?