Gregor Clegane, nicknamed the "Mountain that Rides" or simply 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. In the books, the character is initially introduced in 1996's A Game of Thrones. He subsequently appeared in A Clash of Kings (1998), A Storm of Swords (2000) and in A Dance with Dragons (2011).