Gale Nolan

Gale Nolan is the headmaster of Welton Academy and the main antagonist in Dead Poets Society.

Biography
Before the events of Dead Poets Society, he was an English Teacher at Welton Academy in Vermont.

Personality
He is a strict man who expects all students and teachers to follow the school's century old tradition. He blamed John Keating for corrupting the boys' dreams with his so-call free thinking methods as well as encouraging Neil Perry to flout his father's authority that makes him want to become an actor.

Trivia
At the beginning of the film, Tom Perry calls Mr. Nolan “Doctor”, implying he has his doctoral degree.