Diluc was once a confident and passionate young man, dedicated to his work with the Knights of Favonius. But after his father's untimely death, Diluc became aloof, bitter, and distant. He doesn't like wasting time on small talk and gets impatient easily. Diluc has porcelain skin with a lean, athletic body, crimson red eyes, and scarlet-hued hair that's always pulled back in a messy ponytail that extends down to the middle of her back.