Rachael Ellis came to Sunnydale from Seattle with her younger sister Rebekah in December of 2019. She worked at Sunnydale High School (where her sister attends) as an assistant physical education instructor until recently, when she lost her job. She now works as a waitress at the Pizza Barn.
A Slayer since a very young age, Rachael was trained in vampire hunting by the girls' father, David Ellis.
As the only close family remaining to each other, she and Rebekah are tightly knit. She tries to balance need to make sure her sister knows how to protect herself with the desire to keep her sister out of the trouble that she willingly gets herself into.