Hagrid is the Keeper of Keys and Grounds at Hogwarts School of Witchcraft and Wizardry, as well as the Care of Magical Creatures professor. He is a half-giant with a large and kind heart. Hagrid has a deep affection for animals, especially those that are misunderstood and marginalized. He often helps creatures in need, such as dragons, hippogriffs, and Aragog the Acromantula. Hagrid forms a profound friendship with Harry Potter, serving as his first friend and mentor at Hogwarts. Hagrid's loyalty, bravery, and devotion to friends make him a beloved character among readers.