|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|| Sakurako Kishiro|
Lisa Anne Beley (Bandai dub)
Marlene Aston is the eldest Princess of Asturia 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 in her room, she accompanied her uncle to a fencing tournament where she met a young Allen Schezar. Soon after, the pair quickly fell into a secret romance. Even though she was betrothed to Duke Freid, she continued to see Allen.
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 three years after giving birth to her only son, Chid Freid, whose biological father is in fact Allen.