Agatha Trunchbull, also known as Miss Trunchbull or simply The Trunchbull, the fictional headmistress of Crunchem Hall Primary School (or Elementary School), is the main antagonist in Roald Dahl’s 1988 novel Matilda and its spinoffs: the 1996 film Matilda (played by Pam Ferris), the 2011 musical Matilda (played by Bertie Carvel) and the 2022 film Matilda the Musical (played by Emma Thompson). She is said to look "more like a rather eccentric and bloodthirsty follower of the stag-hounds than the headmistress of a nice school for children".