Troll in the Underground Chambers

Quirinus Quirrell's second mountain troll
Biographical information
Blood status	Troll
Physical information
Species	Mountain Troll
Height	Over 12 ft.
Skin colour	Grey
Affiliation
Occupation	Guards the Philosopher's Stone
Loyalty	Hogwarts School of Witchcraft and Wizardry

Quirinus Quirrell's second mountain troll was a troll used to guard the Philosopher's Stone in 1991. It was the obstacle of Quirinus Quirrell. It was in between Minerva McGonagall's giant chess set and Severus Snape's potion riddle.

Behind the scenes

• In the book and GBC video game, the troll s collapsed on the floor when Harry and Hermione get there. However, in the PS1 game adaptation, the troll wakes up when Harry and Hermione get there. The troll is still groggy so while Hermione tries to unlock the next door, Harry levitates the litter present in the room from out of the troll's way, without making noise. The troll doesn't notice a hole on the floor and falls into it.

Appearances

• Harry Potter and the Philosopher's Stone (First appearance)
• Harry Potter and the Philosopher's Stone (video game) (GBC and PS1 versions only)