Nonette Enneagram holds the rank of Knight of Nine. She's best known as one of the few people who can actually intimidate Second Princess Cornelia—they went to military school together, and Cornelia still views her as a senior. Despite her intimidating presence, Nonette comes across as upbeat and cheerful, which makes her all the more striking as someone Cornelia genuinely fears.
Her name is a deliberate play on the number nine: both "Nonette" and "Enneagram" derive from Latin and Greek prefixes for nine (non- and ennea-).
Nonette first appeared in the PSP/PS2 game Code Geass: Lost Colors. Interestingly, among all the Knights of the Round, she's the only one with no speaking role in the anime itself—she shows up just twice, and both times in non-active capacities, making her something of a mysterious figure in the series proper.
Content compiled by AnimeList.moe from publicly available sources.
