He exists, yes. A very dear friend, in fact. His name in the original tongue is Lucifel.

[All that uneasiness? Gone in an instant. Also yes, that is an abomination of a name mashed together from two different languages.]

He's rather different from the stories, of course. He's known as God's own right hand, and is one of the few capable of speaking to Him at any time. There is no Fall - in fact, I've never known an angel more loyal.