If you watch Game of Thrones or read the books, part of you must feel a little bit of malice towards George R.R. Martin, the man behind it all — the man who killed all those people you liked so much. But his comeuppance is here. Martin participated in the ALS Ice Bucket Challenge this weekend and seemed to really hate it. (At least you have a head, George!) Keeping it in the family, below that, watch Lena Headey, Kit Harington, and Nikolaj Coster-Waldau do it. Next season, if you see a bunch of White Walkers showering in ice-cube-filled water, you’ll know where it all started.