エロイナ・ディ・カバリェロ・イスタ

A knight who serves as Sylvie's imperial guard. Her nickname is "Elle." She excels in martial arts and boasts unparalleled strength, but is otherwise a bit of a klutz. Elle is prone to flying off the handle, so no one ever thinks of teasing her. She hates dirty jokes and will get angry if someone makes fun of her name.

Her female classmates and peers believe she stands out among the rest, and is popular with them as a result. She responds kindly when spoken to, so she has many latent fans.

"All humans need dignity, especially if you are to get along with Sylvie-sama."