Steppens D. Ellie is a 33-year-old skilled female swordsman and assassin, who comes from the Town of St. Eden in South Blue, along with his twin brother, Steppens D. Storm. She owns some special weapons, including the voltaic bomb, haunted bomb, and some destructive chemicals, which are made by her and her brother. She can also uses Busoshoku Haki, Kenbunshoku Haki, and some of the assassin skills.