Disturbing 'Game of Thrones' Secrets Every Die-Hard Fan Should Know – The Cheat Sheet

9. The sound of Joffrey choking isn’t from Jack Gleeson

King Joffrey at his wedding with his arm up to his throat choking

King Joffrey at his wedding with his arm up to his throat choking He doesn’t sound that much like an infant. | HBO

Jack Gleeson did do some sounds for the shocking death scene, but it didn’t make the cut.

“Once he starts choking it’s not really Joffrey you hear for the most part, even though we recorded the actor doing it,” sound editor Tim Kimmel told Vanity Fair. “It didn’t sell for us, so we were going into the library and doing our own recordings. There’s a recording .. it’s a woman impersonating a choking baby.”

Next: A cow skill was used for this scene.