Creatures
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Random
100

This creature is always very hungry and has a very large family

Aragog 

100

This person is a half-blood professor

Severus Snape

100

In which book did Harry find out he has a Godfather?

The Prisoner of Azkaban

100

What does Alohomora do?

Unlocks a door

100

When is Harry's birthday?

July 31st

200

Once you drink this animal's blood, you will have a cursed life

Unicorn

200

This person's parents are dentists

Hermione Granger

200

In which book did other schools visit Hogwarts?

Goblet of Fire

200

What does Expelliarmus do?

Disarming Charm

200

How many balls are used in a game of Quidditch?

4 (quaffle, 2 bludgers, snitch)

300

Half-man, half-creature, highly intelligent

Centaur

300

The second oldest Weasley child

Charlie

300

In which book does Harry become great at potions

Half-blood Prince

300

What does Expecto Patronum do?

Creates a patronus to protect the person

300

What is the real name of Scabbers?

Peter Pettigrew

400

This creature is created by a chicken egg being hatched beneath a toad

Basilisk

400

Imposter Mad-Eye Moody

Barty Crouch Jr.

400

What book talks about the Mirror of Erised

Sorcerer's Stone
400

What does Petrificus Totalus do?

Full body-bind curse

400

How old are you when you get your Hogwart's letter

11

500

This creature stopped Fleur Delacour from completing the second Triwizard challenge

Grindylows
500
While not a person, this character loves to create chaos and is not mentioned in the movies

Peeves the Poltergeist 

500

Which book does Umbridge take over?

Order of the Phoenix

500

What does Incendio do?

Starts a fire

500

What happens to Arthur Weasley when he is on watch at the Ministry of Magic?

He is attacked by Nagini