Glacia Sleeter is a resident of the St. Corona's Crest Foster home, and shares a room with the younger Nikita Volya. She possesses the mystic trait and demonstrates an affinity for ice-based elemental spells. Beyond this, her tolerance to cold is far higher than that of her peers. Her core body temperature is also considerably lower. Overall, Sleeter is mostly focused on herself. She values her personal appearance highly, and strongly prefers to keep her conflicts verbal at most.