He was a giant among men. Literally. Wun-Wun was the only member of his ancient, towering race to survive the wildlings' battles against White Walkers, Night's Watchmen and Stannis Baratheon alike – as well as the only one to cross south to supposed safety beyond the Wall. He wound up battling fiercely for the cause of his one-time enemy Jon Snow, giving his life to defeat Ramsay Bolton and defend the North against its many enemies. He may not have been human, but he was one hell of a guy.