Annerose Miload (アンネローゼ・ミロード) is the heir of House Miload, which is a branch family of House Mathers that specializes in magic.
Annerose has blue eyes and long, dark indigo colored hair which is braided around her head, prompting Subaru to call her a "Braid Loli" as he didn't know what her hairstyle was called. She wears an extravagant dress similar to Beatrice but the decorations are much plainer. Contrary to her young age, she has a hard look and a distinguished expression.
As the heir to the Miload Family, Annerose is mentally mature for her age. She is used to having Demi Humans around as she lives in an environment where many of them work. She has good relations with Emilia, who she refers to as Emily, though if the two of are compared Annerose seems like she is older than her. Due to her excessive expressions of love to Emilia, Subaru considers her a rival in love.