Harry's godfather. Imprisoned for mass murder, but subsequently escaped from Azkaban.
House-elf. Idolises Harry but gets him into lots of trouble.
Headmaster of Hogwarts. Also Supreme Mugwump of the International Confederation of Wizards and Chief Warlock of the Wizengamot.
Clever Gryffindor student at Hogwarts. Harry's next-best friend after Ron Weasley. Her parents are Muggle dentists.
Keeper of Keys and Grounds and teacher of Care of Magical Creatures at Hogwarts. Son of a giantess and a wizard. Has a liking for strange and dangerous creatures, especially dragons.
Sirius Black's cousin. Married to Rodolphus Lestrange, a pure-blood wizard and Death Eater.
Teacher of Defence Against the Dark Arts in Harry's second year. Author of numerous autobiographical travel books.
Forgetful and accident-prone friend of Harry's. He comes from a magical family but thinks he is not very good at magic.
A Ravenclaw student with a dreamy voice and large misty eyes. In the year below Harry at Hogwarts. Her father, Xenophilius, is the editor of The Quibbler.
Defence Against the Dark Arts teacher in Harry's third year at Hogwarts. Member of the Order of the Phoenix.
Deputy Headmistress of Hogwarts. Professor McGonagall is Head of Gryffindor house and is the Transfiguration teacher.
Harry's arch-enemy at Hogwarts. Malfoy believes himself to be superior to Harry and hates Harry and all his friends.
Student at Hogwarts. Famous for having survived an attack by Lord Voldemort in infancy.
Potions master at Hogwarts. Head of Slytherin house. He hates Harry Potter.
A young and clumsy witch who is a Metamorphmagus, an Auror, and a member of the Order of the Phoenix. Prefers to be called by her surname, Tonks.
Son of a witch and a Muggle. Feared by the wizarding community, most of whom only dare to refer to him as 'He Who Must Not Be Named' or 'You-Know-Who'.
One of Ron Weasley's older brothers. Twin to George. In Gryffindor house.
One of Ron Weasley's older brothers. Twin to Fred. In Gryffindor house.
Ron's younger sister. One year below Ron and Harry at Hogwarts. She plays for the Gryffindor Quidditch team.
Harry's best friend at Hogwarts. In Gryffindor house. Ron has flaming red hair and freckles, like all his brothers.