Persons on the periphery of the goth subculture claiming to be actual vampires but in reality being socially stunted rejects who claim the vampire aesthetic in order to build an elaborate social hierarchy around it. Often they believe they have psychic powers and they feed on the energy or "prana" of those around them, willing or not. Obese as often as not, but generally unattractive. Fake fangs abound. Fake accents too. Just be glad they're only having sex with each other.
Those vamptards over at the bar are licking my prana even as we speak; I can just feel it.