The Potterpedia

 Rubeus Hagrid

Rubeus Hagrid is the part giant gamekeeper and care of magical creatures teacher at Hogwarts.

His mother was a giant but he never lived with her. His Dad died while he was at Hogwarts. Hagrid was expelled from Hogwarts because it was believed he opened the Chamber of Secrets. He didn't but Tom Ridddle blamed it on him and his acromantula friend Aragog so that hogwarts wasn't shut. His wand was snapped but the pieces are secretly hidden in a pink umbrella.

it was Hagrid who delivered Harry Potter at the Dursleys and it was Hagrid who carried the suposedly dead Harry out of the forest.

Hagrid is a member of the Order of the Phoenix.