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The Mountain Troll is a minor antagonist in Harry Potter and the Philosopher's Stone. He was let into Hogwarts School of Witchcraft and Wizardry on Hallowe'en of 1991 by Quirinus Quirrell, possessed by Tom Marvolo Riddle, in an attempt to steal the Philosopher's Stone of Nicolas Flamel.

Quirinus Quirrell was able to control this troll, a rare talent. He said later that he had a gift with trolls. He also used a troll to help protect the Philosopher's Stone.

History

Background

Personality

Role in the film

Harry Potter and the Philosopher's Stone

That evening, during Halloween, Harry notices Hermione's absence, and Neville tells him that Parvarti Patil said she's been drowning her sorrows in the girls' bathroom, making Ron feel guilt-ridden. At that moment, Professor Quirrell comes running into the Great Hall, shouting about a troll in the dungeon, then faints. All the students begin to panic until Dumbledore calms them down. He then instructs the Prefects to take the students back to the dormitories, and asks the teachers to accompany him to the dungeons.

As the Gryffindors head back to their common room, Harry and Ron suddenly remember Hermione and hurry off to warn her. Unfortunately, just as they arrive, the troll appears and enters the girls' bathroom. Inside, Hermione exits a stall, and immediately comes face-to-face with the troll, who proceeds to destroy the stalls with his club. Harry and Ron arrive just in time, and throw pieces of wood at the troll. Harry grabs hold of the troll's club and uses it to get onto the beast's shoulders, and shoves his wand up its nose, much to Ron's, and Hermione's, disgust. The troll furiously grabs Harry by the leg and swings its club at him. Ron, grabs his wand, and with a little guidance from Hermione, uses a levitation charm to make the troll's club levitate. The troll expresses surprise by its club's sudden disappearance, then looks up to see its club hovering above its head, before getting hit on the head by it. The troll drops Harry, stumbles, and topples to the floor, almost right on top of Harry. Harry prys his wand out of the troll's nose and cleans it off.

Professors McGonnagall, Quirrell, and Snape arrive; Professor McGonnagall orders Harry and Ron to explain what happened before Hermione steps in, claiming she went looking for the troll, because she read about them and thought she could take care of it, but she was wrong. As Professor McGonnagall berates Hermione for her stupidity, Harry notices a bite wound on Professor Snape's leg. She then gives Harry and Ron five points each for barely surviving against the troll. Professor Quirrell then asks Harry, Ron, and Hermione to leave the bathroom before the troll wakes up.

Other appearances

Video games

Harry Potter and the Philosopher's Stone

Harry Potter and the Order of the Phoenix

Harry Potter and the Half-Blood Prince

Lego Harry Potter: Years 1–4

Gallery

Trivia

v - e - d
Potterverse logo
Media
Films: Harry Potter Logo Philosopher's Stone | Chamber of Secrets | Prisoner of Azkaban | Goblet of Fire | Order of the Phoenix | Half-Blood Prince | Deathly Hallows (Part 1 / Part 2)

Spin-off films: Fantastic Beasts and where to find them logo
Video games: Philosopher's Stone | Chamber of Secrets | Prisoner of Azkaban | Goblet of Fire | Order of the Phoenix | Half-Blood Prince | Deathly Hallows (Part 1 / Part 2) | Quidditch World Cup
Lego Video games: Lego Creator: Harry Potter | Lego Creator: Harry Potter and the Chamber of Secrets | Lego Harry Potter: Years 1–4 / Years 5–7
Soundtracks:
Home video: Video

Characters
Original characters:Harry Potter | Ron Weasley | Hermione Granger | Albus Dumbledore | Rubeus Hagrid | Fred Weasley | George Weasley | Angelina Johnson | Alicia Spinnet | Gilderoy Lockhart | Remus Lupin | Alastor Moody | Quirinus Quirrell | Horace Slughorn | Percy Weasley | Cho Chang | Colin Creevey | Cedric Diggory | Ginny Weasley | Neville Longbottom | Luna Lovegood | Sirius Black | Vernon Dursley | Dudley Dursley | Petunia Dursley | Lord Voldemort | Draco Malfoy | Lucius Malfoy | Cornelius Fudge | Dolores Umbridge | Alecto Carrow | the Dementors of Azkaban | Amycus Carrow | Vincent Crabbe | Gregory Goyle | Argus Filch | Severus Snape | Bellatrix Lestrange | Bartemius Crouch Jr | Regulus Black | Pius Thicknesse | Salazar Slytherin

Spin-off characters: Newt Scamander | Tina Goldstein | Jacob Kowalski | Queenie Goldstein | Percival Graves | Seraphina Picquery | Credence Barebone | Mary Lou Barebon | Gnarlack | Henry Shaw Sr. | Langdon Shaw | Henry Shaw Jr. | Modesty Barebone | Chastity Barebone | Gellert Grindelwald | Leta Lestrange

Creatures
The Basilisk | The Mountain Troll | The Hungarian Horntail
Mascots/Pets
Crookshanks | Nagini | Hedwig | Fawkes | Buckbeak
Mystical Animals
Locations
Hogwarts Castle: | Grand Staircase Tower | Great Hall | Gryffindor Tower | Hogwarts Quidditch Pitch | The Forbidden Forest | Forbidden Third Floor Corridor | Underground Chambers | Hospital Wing | Slytherin Dungeon | The Chamber of Secrets | Topmost Tower | Platform 9¾

Diagon Alley: | Gringotts Wizarding Bank | Ollivander's
Residences: 4 Privet Drive | The Burrow | Godric's Hallow | Potter's Cottage
Other Locations: Limbo | England | Azkaban | British Ministry of Magic | Department of Mysteries

Objects
Weapons: Godric Gryffindor's Sword

Brooms/Nimbus: Nimbus 2000 | Nimbus 2001 | The Firebolt
Wands: Harry's Wand | Ron's Wand | Hermione's Wand | Voldemort's Wand | Elder Wand
Others: The Remembrall | The Invisibility Cloak | The Philosopher's Stone | Mirror of Erised | The Sorting Hat | The Basilisk Fang | Tom Riddle's Diary | The Marauder's Map | The Goblet of Fire | Deluminator

Transports
Powders: Floo Powder | Floo Network

Vehicles: Flying Ford Anglia | Flying Motorcycle | Hogwarts Express

Organizations/Groups
Order of the Phoenix | Dumbledore's Army | Death Eaters
People
Directors: Chris Columbus (12) | Alfonso Cuarón (3) | Mike Newell (4) | David Yates (58)

Producers: David Heyman | Chris Columbus (3) | Mark Radcliffe (3) | David Barron (58) | J. K. Rowling (78)
Screenwriters: Steve Kloves (14, 68) | Michael Goldenberg (5)
Cast Members: Daniel Radcliffe | Rupert Grint | Emma Watson | Maggie Smith | Robbie Coltrane | Alan Rickman | Tom Felton | Richard Harris (2001-2002) | Michael Gambon (2004-present) | Helena Bonham Carter | Warwick Davies | Ralph Fiennes | Brendan Gleeson | Richard Griffiths | Jason Isaacs | Gary Oldman | Fiona Shaw | Mark Williams | Julie Walters | Emma Thompson | Timothy Spall | David Thewlis | Miranda Richardson | Ian Hart
Novelist: J.K. Rowling

See also
J.K. Rowling | Harry Potter and the Cursed Child
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