|Marlene Erisha Aston|
|Father||King Grava Aston|
|Mother||Queen Therese Aston|
|Siblings|| Princess Eries|
|Love Interest|| Duke Freid (Married) |
|First Appearance||The Blue-Eyed Prince|
|Voice|| Lisa Anne Beley (English)
Sakurako Kishiro (Japanese)
The eldest Princess of Astoria and Duchess of Freid.
She has long blond hair and blue eyes, and is often seen wearing pink gowns along with white gloves and a headpiece that goes across her forehead.
Marlene was the eldest daughter of King Grava Aston and Therese Aston. During a day when her family decided that she spent too much time alone, she accompanied her uncle to a fencing tournament where she meets a young Allen Schezar, soon after the pair quickly fall into a secret romance. She continued the affair with him even though she was to be married to Duke Freid.
Once in Freid, she fell in love with her husband the Duke and realized that her love for Allen was a juvenile one. She died soon after giving birth to her only son, Chid Freid, whose biological father is in fact Allen.