reines el-melloi archisorte
A relative of Kayneth El-Melloi Archibald, belonging to the Archisorte branch of the family. After his death, she is selected as heir-apparent of the house of El-Melloi. She appoints Waver Velvet as her step-brother and steward to the title as Lord El-Melloi II until she is of proper age to assume it herself.
A aged down, short-haired version of her appears in episode 1 of the Lord El-Melloi II Case Files anime and the special episode.
Can be summoned in Fate/Grand Order as a Rider-class Pseudo-Servant, with Sima Yi of Romance of the Three Kingdoms inhabiting her body.