Which of Gru’s three adopted daughters is the youngest? Agnes is the youngest.
Agnes is the youngest member of the trio Gru adopts in Despicable Me. Margo is the oldest and most protective, while Edith is the middle sister. Agnes is portrayed as cheerful, trusting, and openly affectionate, making her the child most immediately drawn to Gru despite his original plan to use the girls in a villainous scheme.
Her love of unicorns is one of her defining traits. The famous “It’s so fluffy!” scene centers on Agnes reacting excitedly to a plush unicorn, and the character’s innocence helps shift Gru’s relationship with the girls from manipulation toward genuine parenthood. Agnes is voiced by Elsie Fisher in the first two films, with later films using different voice actors as the character’s production history continued.
Agnes is sometimes confused with Margo because both girls are central to Gru’s household, but the films consistently identify Margo as the mature oldest sister and Edith as the tomboyish middle child. In Despicable Me 3, Agnes even adopts a one-horned goat she mistakes for a unicorn and names Lucky.