Sirius Black
Harry's godfather. Imprisoned for mass murder, but subsequently escaped from Azkaban.
Dobby
House-elf. Idolises Harry but gets him into lots of trouble.
Albus Dumbledore
Headmaster of Hogwarts. Also Supreme Mugwump of the International Confederation of Wizards and Chief Warlock of the Wizengamot.
Hermione Granger
Clever Gryffindor student at Hogwarts. Harry's next-best friend after Ron Weasley. Her parents are Muggle dentists.
Rubeus Hagrid
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.
Bellatrix Lestrange
Sirius Black's cousin. Married to Rodolphus Lestrange, a pure-blood wizard and Death Eater.
Gilderoy Lockhart
Teacher of Defence Against the Dark Arts in Harry's second year. Author of numerous autobiographical travel books.
Neville Longbottom
Forgetful and accident-prone friend of Harry's. He comes from a magical family but thinks he is not very good at magic.
Luna Lovegood
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.
Remus Lupin
Defence Against the Dark Arts teacher in Harry's third year at Hogwarts. Member of the Order of the Phoenix.
Minerva McGonagall
Deputy Headmistress of Hogwarts. Professor McGonagall is Head of Gryffindor house and is the Transfiguration teacher.
Draco Malfoy
Harry's arch-enemy at Hogwarts. Malfoy believes himself to be superior to Harry and hates Harry and all his friends.
Harry Potter
Student at Hogwarts. Famous for having survived an attack by Lord Voldemort in infancy.
Severus Snape
Potions master at Hogwarts. Head of Slytherin house. He hates Harry Potter.
Nymphadora Tonks
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.
Lord Voldemort
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'.
Fred Weasley
One of Ron Weasley's older brothers. Twin to George. In Gryffindor house.
George Weasley
One of Ron Weasley's older brothers. Twin to Fred. In Gryffindor house.
Ginny Weasley
Ron's younger sister. One year below Ron and Harry at Hogwarts. She plays for the Gryffindor Quidditch team.
Ron Weasley
Harry's best friend at Hogwarts. In Gryffindor house. Ron has flaming red hair and freckles, like all his brothers.