25. The High Sparrow
Jonathan Pryce was one of the series' biggest casting coups, so it's fitting his fundamentalist character pulled off a coup of his own. Empowered in an ill-advised move by Queen Cersei as a bulwark against her rivals in House Tyrell, he and his fanatical followers brought the system to its knees and ruled King's Landing in the monarchy's place – at least until Cersei blew them all to seven hells. All the while, Pryce's chilling holy man smiled and spoke softly. If the gods are on your side, who needs to yell?