Mam'zelle Dupont is one of the two mistresses of Malory Towers. She is very plump and jolly and has a bun on her head.
Mam'zelle Dupont is a victim to many tricks planned by Alicia,Betty and June.The first ever trick in which she fell to was when Alicia became deaf. She shares a study with Miss Potts. Her favourite students are Nora, Daphne Hope and Bonnie. She has a sense of humour too. She is terrified of spiders and cats.