Head administrator of Azkaban prison, responsible for overseeing the Dementor guards.

Dangerous Death Eater and Sirius Black's cousin, mentioned as another notorious Azkaban prisoner.

Shopkeeper who sells cauldrons and potion-making equipment in Diagon Alley.

Minister for Magic who meets Harry at the Leaky Cauldron. Concerned about Harry's safety from...

Editor of the Daily Prophet who oversees coverage of Sirius Black's escape.

One of the other dangerous prisoners mentioned as being held in Azkaban with Black.

Owner of an ice cream parlor in Diagon Alley who serves Harry during his stay at the Leaky Cauldron.

Owner of the joke shop in Diagon Alley, competitor to Zonko's in Hogsmeade.

Wandmaker in Diagon Alley, remembers every wand he's ever sold including Harry's.

One of the goblin tellers at Gringotts Bank who handles wizarding currency.

Accidentally inflated Aunt Marge and fled Privet Drive in anger. Picked up by the Knight Bus.

Auror involved in the hunt for Sirius Black, competent but not exceptional.

Senior Auror mentioned in connection with the search for Sirius Black.

One of the magical beds on the Knight Bus that slides around during the wild journey.

Suspicious wizard lurking in Knockturn Alley, dealing in dark magical items.

Witch who works at the Leaky Cauldron, serves drinks and meals to customers.

Owner of Madam Malkin's Robes for All Occasions, outfits Hogwarts students.

Ministry official assigned to protect Minister Fudge during his meeting with Harry.

Owner of the Quidditch supply shop in Diagon Alley, knowledgeable about flying equipment.

Daily Prophet reporter mentioned in connection with sensational stories about Sirius Black's escape.

Jamaican shrunken head that announces Knight Bus stops and destinations.

Dangerous wizard who escaped from Azkaban prison. First wizard ever to break out of the supposedly...

Toothless innkeeper of the Leaky Cauldron who welcomes Harry. Concerned about his safety from...

Mysterious Ministry employee from the Department of Mysteries, mentioned in connection with magical...

Radio broadcaster on the Wizarding Wireless Network who announces news and programs.

Radio journalist reporting on Sirius Black's escape and the Ministry's response.

Eccentric neighbor of the Dursleys who owns many cats, mentioned as Harry's occasional babysitter.

Harry's spoiled cousin who bullies him regularly. Large, stupid boy who is pampered by his parents.

Elderly driver of the Knight Bus with thick glasses. Takes the bus on wild journeys through London...

Harry's loyal snowy owl who delivers his mail and provides companionship.

Magical letter that screams its message aloud, mentioned as punishment mail.

Vernon's sister who breeds bulldogs. Nasty woman who insults Harry's parents, causing Harry to...

Ministry employee whose job is to modify Muggle memories of magical incidents.

Nosy neighbor of the Dursleys who gossips about the family's business.

Harry's aunt and Lily's sister. Thin, horse-faced woman who resents Harry and tries to suppress his...

Aunt Marge's favorite bulldog who once attacked Harry. Aggressive dog that reflects his owner's...

Conductor of the Knight Bus, around eighteen years old with protruding ears. Chats with Harry about...

Harry's uncle and guardian. Large, beefy man who works at a drill company and despises anything...