This may look like a succubus, but she is not. Over on Slushe, AmourEtLuxure has said this is Nyx, Goddess of the Night. She is the primordial creatrix of the Greek pantheon, self-manifesting from the formless void of Kaos. Even Zeus, patriarch of the Olympians, fears her. An eloquent passage expressing that fear can be found in the Iliad.