Beatrix is one of the protagonists of HUNTED. She was one of the five test subjects made by the Scientist, along with Carla, Lonnie, Mary and Vic. As a vampire, she killed Lonnie by accident in the middle of a runaway due to a gunshot.
Beatrix's whole past is unknown. The only known thing she knows is that she is a vampire, created alongside Carla, Mary, Vic and Lonnie, and she used to live in the big city.
In the end, it's revealed the head of the Hunts, Weston, was her father, and that he turned her into a vampire when she had sympathy for the other monsters. However, she was revived after her "death" and willingly became the final antagonist in an attempt to further the Hunts.
Beatrix and Mary seem to be a good friends, since they've met, and often help each other. They tag along with William to run from Weston's mansion.
Beatrix and Vic seem to have stable relationship. However, she was angry at him for leaving her in a cell because of Carla.
Beatrix and Carla seem to have a stable relationship. Hovever, Carla gets angry when she found out that Beatrix killed Lonnie.
Beatrix and Lonnie seem to have a stable relationship. When he died, Beatrix seems to regret that she killed Lonnie. Later on, as a ghost on Beatrix's dream, Lonnie is angry that he died.