Rayne

Rayne A.K.A. BloodRayne is a Dhampir/half human half vampire. She is the daughter of the Nazi Vampire Kagan and an unnamed human woman.

History
Rayne is a bloodthirsty American Dhampir, born c.1915-1916. Her mother was raped by her vampire father, Kagan. Kagan later murdered her mother's entire family so that the only family member Rayne could turn to is him. This wasn't cruelty, but a policy for all of the dhampir he "created", possibly so that humans wouldn't revolt and use the vampire/dhampir weakness of the sun, holy items and water against them.

Circa 1932, she spent her teenage years trying to hunt down and kill her father, to avenge her family. Her search led her to Europe, where she murdered Vampires before being apprehended. She claimed that her victims had been vampires, but was disbelieved by the authorities, but quickly managed to escape from them and continue her hunt.

She was recruited into the mysterious Brimstone Society via an invitation. The Brimstone Society sent her on missions to eliminate supernatural threats to the world. One of these missions required her to use her vampiric powers against the Nazis, who were on the verge of using magical artifacts to bring the demon Beliar back to life. Rayne also learned of a plan to use demonic parasites called 'Daemites' against the enemies of the Nazis, after they had been tested on prisoners.

(From the BloodRayne wiki)