Joanne Harcourt is a second-year student at Weston College. He is part of the Red House, classified by his gentility. He was previously the Prefect's Fag of Edgar Redmond. Having been deemed a liar by the majority of the students, Joanne possesses low self-esteem. As a consequence, he developed a reserved demeanor and rejects the idea of being popular, claiming that his only potential is to read and nothing else.

Joanne has a fragile temperament, as shown when he easily bursts into tears when reminded of the pitiful state he is in due to the misunderstanding of other students, but eventually regains his confidence when he becomes Edgar Redmond's Fag. He generally regards others with friendliness.