Voiced by: Satomi Arai
Nonette Enneagram (ノネット・エニアグラム, Nonetto Eniaguramu?) is the Knight of Nine. She attended military school with Second Princess Cornelia, who considers Nonette her senior. She happens to be one of the few people Cornelia actually fears. Her first and last names contain the Latin and Greek prefixes for 9, non- and ennea- respectively. She also appears in the PSP/PS2 video game, Code Geass: Lost Colors.