I'm going to post a few of my bios, starting with this one, since she's my main toon, and I've been complimented on the bio in game.
Not a vampire... something much older, but not unredeemable. As in many tales, the Monster was defeated by a Hero, who was as wise as he was powerful. He bound her, and turned a Monster into a Guardian. Over centuries, she has paid her debt to civilization, and learned many things - that she cannot alone stop an invading army, that museums are happy to employ someone who is fluent in Sumerian and Akkadian, and that, perhaps, it is now time to fight again, as a Guardian for all people.
Not a vampire. Not a Djinnah, although the Hero in the description is in fact King Solomon. Not really a succubus, not in the ordinary sense certainly.