Negan

Negan is a character from The Walking Dead comic book series who took the Governor's role as the main antagonist of the series. He is the leader of the Saviors, who ambushed Rick and his group after they agreed to set up camp for the night while on their way to The Hilltop. After that, Negan showed how much of a sadistic killer he can be by brutally and savagely beating Glenn to death with a baseball bat covered in barbed wire that Negan called "Lucille". He is now in charge of the group and is holding Rick's son, Carl, hostage.