Birthdate: 23 January, 1908 (Manga)/1912 (Anime)
Age: 16
Family: Parents (both deceased), Younger brother Joshua
Place of Origin: United States
Likes: Exploring, food, Chrno
Dislikes:
Personality traits: Dedicated, stubborn, clumsy, sweet, caring, tender

The impulsive, 16-year-old, protagonist of Chrno Crusade. Rosette is an elite exorcist of the Order of Magdalene and goes out on missions to destroy deadly spirits and devils. Her primary motivation is to save her brother Joshua, who has been captured by Aion.

Because of a contract she formed with Chrno when she was 11, her life is slowly ticking away. Despite this, she continues to run towards her goals confronting every challenge with a headstrong attitude. This attitude allowed others like Chrno and Azmaria to push forward as well. She loves Chrno and is willing to sacrifice more of her life in order to make sure he's alright.