Vlad Drakul is the sire, and leader, of one of the most well known vampire clans; The Drakul. The story of his crimes are ones used to scare children into behaving. When Vlad was a ruler of a small country hundreds of years ago. He created a mass genocide out of anyone who opposed him and broke a law within his kingdom. The punishment was impalement. He would have you slowly lowered upon a large wooden stake.
Legend, and holy figures, say that the only way to kill a Drakul permanently is with a stake through the heart.