An elegant, fourteen-year-old miko (shrine maiden). Because of her work as a Shinto priestess, Rei can sense and dispel evil even in her civilian form. When she transforms into Sailor Mars she can also manipulate fire. She is very serious and focused, but although easily annoyed by Usagi's flightiness, cares about her very much. Rei is portrayed as boy-crazy in the early anime and short-tempered throughout, but is uninterested in romance and self-controlled in both the manga and live-action series. She attends a private, Catholic school separate from the other girls.