What do you know about Rubeus hagrid explain?

Rubeus Hagrid is the gamekeeper for Hogwarts and first introduces Harry to the wizarding world. Half-human and half-giant, Hagrid is familiar with the prejudices of "pure-bloods" and often offers unexpected insights into wizarding society. A lover of all animals, Hagrid is especially fascinated by the more dangerous magical creatures in the world, including three-headed dogs (Fluffy) and dragons (Norbert), and often gets into trouble because of these interests. Hagrid becomes close with Harry, as well as Ron and Hermione, and remains a loyal friend to each throughout the entire series.