What Are We?

A laugh filled with Mischief and Malicious Intent sung through the air of Privet Drive, waking none but plaguing their sleep with nightmares of a beautiful man who was both a Demon, Angel and Neither. A man who played either side but kept with none. Someone known by many names - though he only stuck to one: Loki.
Who was Gabriel really? An Angel? A Demon? A God? Or maybe something more...