The Scottish actor and author Robbie Coltrane is best known for this role in the "Harry Potter" films whose responsibility is the gamekeeper and Keeper of Keys and Grounds of what?
Rubeus Hagrid:  He is introduced in "Harry Potter and the Philosophers Stone" as a half-giant and half-human who is the gamekeeper and Keeper of Keys and Grounds of Hogwarts, the primary setting for the first six novels.
i don't know