Kristian Nairn only had one word to work with throughout his time on Game of Thrones, but he found a way to make the most of it. In doing so, he’s become one of the most-beloved characters on one of the great shows in TV history.

Find out how much Kristian knew about the books before he auditioned, the most difficult day he had on-set, and more than you may have known about his fondness for comic books, heavy metal, and World of Warcraft.