Anastasia Tremaine is a secondary antagonist of Disney's 1950 animated feature film, Cinderella, as well as the primary character in Cinderella III: A Twist in Time. She is Cinderella's younger stepsister, the younger sister of Drizella Tremaine, and the youngest daughter of Lady Tremaine. Anastasia eventually abandons her mother and sister and sets out to become a better and more considerate person, and closer to her stepsister. She redeems herself along the way.