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Jesper Poubelle is an anti-vampire crusader.
He has wavy brown hair and he is extremely short.
He has a southern preacher-like style.
Scooby-Doo! Music of the Vampire
Because the appearance of Lord Valdronya at the Vampire Palooza convention reinforced his message about the evil of vampires and was to his political advantage in his intended campaign to be the mayor, he was one of the suspects to be the vampire.