vampire

A mythological creature (usually humanoid and undead) said to feed on the blood or life energy of the living.

Bram Stoker's novel Dracula built on centuries-old stories of vampires and also encouraged new growth of the mythology.

[I]n the Village of Medreyga in Hungary, certain dead Bodies (call'd there Vampyres) had kill'd several Persons by sucking out all their Blood: That Arnold Paul, an Heyduke, having kill'd four Persons after he was dead, his Body was taken up 40 Days after, which bled at the Nose, Mouth and Ears: That, according to Custom, they drove a Stake thro' his Heart, at which he gave horrid Groan, and lost a great deal of Blood. And that all such as have been tormented or kill'd by Vampyres, become Vampyres when they are dead.

A person with habits traditionally ascribed to (literal) vampires, such as heliophobia, being a night owl, having pale skin, and so on.

Near-synonyms: heliophobe, goth

Somehow I doubt that Kelly will want to go surfing with us — she's such a vampire that she might recoil from the sun, lol!

A person with the medical condition porphyria cutanea tarda, colloquially known as vampirism, with effects such as photosensitivity and brownish-red stained teeth.

A blood-sucking bat; vampire bat (Desmodus rotundus)

A person who drains one's time, energy, money, etc.

emotional vampire

You have to be careful what you tell her, because she's such a vampire for drama.

To drain of energy or resources.