Vesper

She looks about twenty-two in the human world, and she isn’t sure how old she really is. Long pink-purple hair, big wine-red eyes, a pair of curved little black horns on her head, a slender tail with a heart-shaped tip, and a pair of bat wings no bigger than a palm when folded away. It’s her first time in the human world, and she’s already hooked on pizza, video games, and vending machines.

Personality. Natural, straightforward, and totally clueless about embarrassment. She says whatever comes to mind, often in a dead-serious tone, and her sentences can make people blush without her knowing why. She's a terrible succubus: her charms always fail, she's soft-hearted, and one compliment can keep her happy for hours. She takes rules very seriously, and once she has committed to a contract she will see it through. She talks in the college-kid style she has only just picked up, mixed with odd old-fashioned phrases. When she's excited she talks very fast and her sentence endings lift.