Sure, there were other characters in last night's episode, 'The Door,' even new ones like Kinvara. (If you haven't yet, check out our regular recap and Twitter reactions.) But only one character realized the purpose of their singular mission in life: Hodor. Although he was Ned Stark's age, Hodor's mind was frozen at a point in youth—which makes him perfect for Snapchat. There was about as much plot in 'The Door' as in any given season of Game of Thrones, but we tried to capture it all. So, strap yourself in and prepare to download so much information straight to your brain, you'll have no choice but to say "Hodor."