- HPPS(Ch. 5,7-8,10)
- Pale young man
- Eyes twitch
- HPPS(Ch. 9)
In HPPS 5, Quirrell is in the Leaky Cauldron when Harry Potter and Hagrid come through. He is introduced to Harry as the Defense Against The Dark Arts teacher at Hogwarts, and he says he's there to pick up a new book on vampires. Supposedly, he had a brilliant mind, but hands-on experience with monsters has brought him to his current state.
In HPPS 10, Quirrell rushes into the Hallowe'en feast and announces that there is a troll loose in the dungeons, and then faints dead away. After Harry and Ron defeat the troll, Quirrell follows McGonagall and Snape into the bathroom, but almost faints again.