Marron is a slender woman with long brown hair. She wears a standard Marine uniform of a white button-up shirt, a Marine cap, blue pants, a white kerchief around her neck, and a white coat over her shoulders.
Marron was fearful of Douglas Bullet and was willing to disengage from battle to escape from him.
Marron wields a cutlass and is proficient in using it.
Four Emperors Saga
One Piece: Stampede
Marron accompanied Sentomaru and Hina to raid the Pirates Festival on Delta Island. She traveled inward to confront the pirates, but while she was clashing with one, Bullet used his abilities to assimilate with the island. She and the pirate she was fighting noticed a wave of Bullet's purple substance and stopped fighting to retreat.