Claim: Gregor Clegane is a character from a novel series in the fantasy genre.
Evidence: 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.
Fantasy is a fiction genre set in an imaginary universe , often but not always without any locations , events , or people from the real world.