From Harry Potter Wiki

Keeper is a position in the Wizarding sport of Quidditch. There is one Keeper per team, and it is their job to guard the goal posts and attempt to stop Chasers from scoring.

[edit] History of the Keeper

The position of the Keeper has existed since at least the thirteenth century, although the role has changed somewhat over time. The Keeper was essentially a Chaser with the added responsibilities of guarding the goal hoops. However, with the addition of the scoring zone by 1620, Keepers generally kept inside the area to prevent the opposition scoring. Keepers are allowed out of the area to head off incoming Chasers, or to intimidate them.

[edit] Known Keepers

• Oliver Wood
• Ron Weasley
• Bletchley
• Cormac McLaggen
• Geoffrey Hooper
• Vicky Frobisher

[edit] Appearances

• Harry Potter and the Philosopher's Stone (First appearance)
• Harry Potter and the Philosopher's Stone (film)
• Harry Potter and the Chamber of Secrets
• Harry Potter and the Chamber of Secrets (film)
• Harry Potter and the Prisoner of Azkaban
• Harry Potter and the Prisoner of Azkaban (film)
• Harry Potter and the Goblet of Fire
• Harry Potter and the Order of the Phoenix
• Harry Potter and the Half-Blood Prince
• Quidditch Through the Ages
• Quidditch World Cup

Game of Quidditch
Officials: Quidditch referee
Player positions: Beater • Chaser • Keeper • Seeker
Playing equipment: Beater's bat • Bludger • Broomstick • Golden Snitch • Quaffle