エニアグラム
is the Knight of Nine. She attended military school with Second Princess Cornelia, who considers Nonette her senior. An upbeat and cheerful woman, she is 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. Her last name may also be a reference to the Enneagram of Personality. She mainly appears in the PSP/PS2 video game, "Code Geass: Lost Colors", her only speaking role.