Gregor Clegane
The Mountain That Rides is one of the most scary figures on Game of Thrones, partly because everyone else looks like a child next to him (including Brianne of Tarth). Of course, in the books, he’s portrayed as being as freakishly tall and as savagely brutal as his portrayal suggests. Interestingly, three different actors played this role in the show: Conan Stevens in the first season, Ian Whyte in the second, and Hafór Jlus Björnsson beginning in season four.
Gregor Clegane
Petyr “Littlefinger” Baelish
We all know that the Night King (or Cersei, depending on who you ask) is meant to be the ultimate villain of the show, but the one who genuinely makes our skin crawl is the crafty and nasty Littlefinger. Petyr has a crush on Catelyn when they meet in their teens, just like in the show. He later gets enamored with Sansa (perhaps because she resembles her mother). Did we mention how sleazy this character is in both the film and the book?
Petyr “Littlefinger” Baelish
