Nikola Tesla from Sanctuary
Nikola is a hybrid, meaning he is part human and part vampire. He later became a member of The Five in the late 19th century. Nikola became a vampire when he injected a derived sample of pure vampire blood. This famous vampire used his powers for many mainly self-serving purposes.
However, Nikola was also crucial in helping the Allies win World War II. When the 21st century came around, Nikola briefly lost his vampire powers. However, in the place of the lost control, he received magnetic forces. When he discovers an ancient vampire queen, he injects her blood and becomes a vampire again.