A mentor like no other
Albus Dumbledore is the principal of Hogwarts magic in the famous Harry Potter novels and film adaptations. He is there when Hagrid picks up little Harry after his parents die and takes him to his aunt and uncle. Ten years later, when Harry has grown up with an aunt and uncle who hate him and have never told him the truth about his parents, he is the one who sends the letter explaining to Harry that he has been admitted to Hogwarts School of Witchcraft and Wizardry. He also sends Hagrid to accompany Harry and explain that his parents were wizards and that he is too. Dumbledore will become very attached to Harry because he is important to fight Voldemort but also because he is an orphan and was also very attached to his parents. Dumbledore is very old and he is often considered as one of the most powerful wizards in the world.