Rubeus Hagrid is a fictional character in the Harry Potter series of novels by J. K. Rowling. He was introduced in Harry Potter and the Philosopher's Stone (2001) as a half-giant who is the gamekeeper and groundskeeper at the wizarding school Hogwarts. He is a member of the Order of the Phoenix and eventually becomes the Care of Magical Creatures professor. Hagrid is portrayed by Robbie Coltrane in all eight Harry Potter films.