Jeffrey Dean Morgan’s Negan is a force to be reckoned with. He’s a sadist, an unhinged psychopath, and a calculating leader; but he’s also one of the more compelling villains that The Walking Dead has seen in years. First introduced at the tail-end of season 6, Negan arguably hit his stride during the somewhat contentious “The Day Will Come When You Won’t Be,” when he lined up Rick and his ragtag crew before brutally executing Glenn and Abraham.