
The Mountain.
Game of Thrones Season 5, Episode 2

that Dragonstone sits
on a MOUNTAIN of dragonglass.
Game of Thrones Season 7, Episode 2

But if you want me
to kill the Mountain for you,
Game of Thrones Season 4, Episode 7

of a MOUNTAIN.
Vikings Season 1, Episode 9

Mountain lion?
Game of Thrones Season 1, Episode 1