Medea

Medea is a rather odd little demon that usually appears in something resembling her physical form in life - except more attractive, of course. And with wings. And horns. You get the idea. Nobody wants to look plain when they're dead, especially if they don't have to. She seems to have an addiction of sorts to gambling. Of course, she also seems to have an addiction of sorts to 'killin stuff' so maybe it's just another way of meddling, something she does quite cheerfully.