Jeanne is a well-built female Heroic Spirit with light skin, amethyst eyes, and hip-length blonde hair styled in a low ponytail with bangs. In battle, she transforms into a magically-enhanced armor. She possesses two Noble Phantasms: Luminosite Eternelle, a holy battle flag that provides powerful protection, and La Pucelle, a holy sword capable of immense offensive power when activated. As a Servant, she is taciturn and cool, but possesses a kind and determined heart. Her personality is a blend of her own and her host's, Laeticia. She has no wish for the Holy Grail, only that the war be conducted correctly. She loves her faith and prayer. She dislikes fighting and general studies but enjoys flag waving. She is a loyal protector and dedicated companion.