Agent BloodRayne (Rayne is an American dhampir, born sometime in 1915, conceived by her vampire father Kagan raping her human mother. Years after Rayne was born, he later drove her mother insane, murdered her and Rayne's entire maternal family so that the only person Rayne could turn to was him. He didn't do this out of cruelty, but a policy for all of the dhampir and vampire children he "created" so they would turn to and be loyal only to him and used in his cult army for holding dominion over the human race. At some point after her mother's death, she was taken in by Prof. Tremaine in Europe before she could have become like most of her evil siblings. Presumably, she didn't know he was affiliated with the Brimstone Society until her recruitment.
She had spent a few of her teenage years trying to hunt down and kill her father to avenge her family. She hunted all across Europe, where she murdered vampires for information on her father's whereabouts before being apprehended by police in 1932. She claimed that her victims had been vampires but was disbelieved by the authorities. She quickly managed to escape from them and continue her hunt. Not long after, in 1933, news of her vampire slaying caught the attention of the Brimstone Society. She had been watched by Brimstone for some time, her potential as a powerful agent of the organization being highly needed. After pursuing a vampire couple, she killed the male and interrogated the female for information with no success of her father's location. She was nearly ambushed by a group of vampires lured in by a distress call from the female vampire Rayne had subdued, interrogated, then immediately afterward decapitated. She escaped to a nearby rooftop where her Brimstone observers had been and left behind a grenade to kill them all. She discovers the Brimstone necklace left behind by her overseers, looking at it curiously. The mysterious piece of jewelry was an invitation, and then she was soon after recruited at 18 years old.)
Dhampir / 89 | 1915 Rayne is a very complex woman. She is shown to be headstrong, snarky, bold, intelligent, very profanatory, sadistically seductive, and takes her job seriously as long as it aligns with her interests. As a result, she is highly confident in her abilities when it comes to fighting and killing. Rayne is strong-willed, independent, and can survive on her own with no help if necessary. She had rarely shown signs of emotions such as alarm, annoyance, surprise, or distress on a mission when she was younger, except for vengeful determination, violence, and rage. Usually, she had her own sense of fun with the bloody carnage she dispatches onto the forces of evil, often toying with them. She grew less cold and emotionally suppressed at her current age, becoming more lively, expressive, and mature.