Gregor Clegane

Gregor Clegane
A Song of Ice and Fire character Game of Thrones character
Hafþór Júlíus Björnsson as Gregor Clegane
First appearance	Novel: A Game of Thrones (1996) Television: "Cripples, Bastards and Broken Things" (2011)
Created by	George R. R. Martin
Portrayed by	Hafþór Júlíus Björnsson (season 4-present) Ian Whyte (season 2) Conan Stevens (season 1) (Game of Thrones)
Information
Aliases	The Mountain That Rides The Mountain Tywin Lannister's Mad Dog Robert Strong
Gender	Male
Family	House Clegane
Relatives	Sandor Clegane (brother)
Kingdom	The Westerlands

Ser Gregor Clegane, nicknamed The Mountain, is a fictional character in the A Song of Ice and Fire series of fantasy novels by American author George R. R. Martin, and its television adaptation Game of Thrones. He is a retainer to House Lannister. An enormous man, he is well known for his size, prowess in battle and cruelty.

Introduced in 1996's A Game of Thrones, Gregor is the older brother of Sandor Clegane, from the fictional kingdom of Westeros. He subsequently appeared in Martin's A Clash of Kings (1998), A Storm of Swords (2000) and in A Dance with Dragons (2011) as Ser Robert Strong.

Ser Gregor Clegane is a huge knight and the elder brother of Sandor Clegane. Called "The Mountain That Rides", he is known for his incredibly cruel nature and uncontrollable temper. His size and strength make him a fearsome warrior, and he has earned a reputation for cruelty and brutality. He is able to wield a two-handed sword one handed. When they were children, Gregor shoved Sandor's face into a brazier, gruesomely scarring him.

Gregor Clegane is portrayed by Conan Stevens in season one, by Ian Whyte in season two, and by Hafþór Júlíus Björnsson in seasons four, five, and six in the HBO television adaptation.