Vlad von Carstein
Appearance and Personality
He was described as a very tall, pale man, with "...a main of black hair and piercing eyes."
He was very intelligent (he manipulated his was into controlling Sylvania by orchestrating a cunning series of events worthy of this guy), but had an evil temper. He would get so mad if his plans were thwarted only his wife could calm him without blood being spilt. They went on to create a big vampire family (there were more than Mannfred and Konrad, those two are just the most infamous).
History
May have been an ancestor of one of the contenders for the Imperial Throne. Like the Joker, he has a multiple-choice past. Unlike the Joker, he's sane enough to remember it, but he never told anyone about it and Games Workshop has never bothered to elaborate on his history.