Agatha Trunchbull, more commonly known as Ms. Trunchbull or simply the Trunchbull, is the main antagonist of the novel, film, and musical versions of the critically acclaimed Matilda. She is the former headmistress of Crunchem Hall Elementary School, Miss Honey's aunt, and Matilda's arch-nemesis. She was portrayed by Pam Ferris in the 1996 film adaptation.