Rubeus Hagrid is a half-giant with shaggy hair and a wild, tangled beard who serves as the Keeper of Keys and Grounds, Gamekeeper, and Care of Magical Creatures professor at Hogwarts. He is excessively fond of interesting creatures that anyone else would call fearsome monsters. Hagrid’s appearance is very intimidating, but he is in fact extremely kind. He lives in a hut on the Hogwarts grounds near the Forbidden Forest.
He was sent to fetch Harry to give him his admission letter because Harry's foster family wouldn't let him have his mail. Since that moment, Harry and Hagrid have been good friends and they help each other. He is sensitive, protective and loyal and would do anything for his friends. Harry and his friends often turn to him for advice.