Fie is a young woman with stark white hair and lime green eyes. During her days at Thors, Fie wore the red blazer uniform of Class VII complete with a short tan skirt, lavender bow, black socks and green sneakers. During the October War , Fie reverts to wearing a Zephyr style black coat, worn unbuttoned over a green crop top and gray shorts.
She now wears a black scarf with a green cross emblazoned upon it, goggles, striped socks and high heeled lace-up boots in green. As a bracer, Fie grows her hair out to mid back and now wears a white and white crop top with a sleeveless beige cropped jacket above. She also wears a a beige miniskirt, a dark turquoise scarf, black elbow length gloves and black thigh high boots. In Trails through Daybreak , Fie returns with a new outfit consisting of a sleeveless khaki shirt, blue underbust corset, white pleated skirt, black shoulder length arm coverings and thigh high black boots.
She wears a series of brown belts to fasten her outfit together and now sports a blue beret with a golden wing motif. The blue in her outfit and attacks is stated to reference to her friendship with Laura S. Fie is armed with twin gunswords, short pistol-like weapons that double as both blades and firearms.
They are capable of rapid firing and being thrown like chakrams. An inscription on the base of the handles read,. Fie is a quiet girl who doesn't take a strong interest in many things. She doesn't focus much on studying, and tends to slack off by sleeping anywhere around the school.
Nevertheless, as she was raised as a jaeger, Fie is more focused and serious on the battlefield. As she matures, she becomes much more playful and interactive, often teasing the others. A girl with no family or friends, she wandered until she came upon Zephyr, a jaeger corps who claimed to be undefeatable and on par with its rival group, the Red Constellation. As a jaeger, she was given the codename "Sylphid", specializing in gunswords and was well-regarded for her physical abilities, making her an agile fighter.
