Best Villian on The Walking Dead.
In my opinion, pound for pound, the best villian on the walking dead is the Governor. Yes, the Guvna over Gareth or the guy from the claim gang or any other villian that has been on the show.
The main reason, is that the Governor presented himself as a benevolent leader. The people of Woodbury had no idea that their leader was crazy like that. Gareth, the guy from the claim gang, etc. all presented themselves as bad dudes.
Even though Gareth may have presented himself to new comers as a good guy, all of the people that lived at Terminus knew what time it was. They all knew what Gareth was doing and what he was capable of. Same with the leader of the claim gang, whatever his name was.
So yeah, the Governor is the best villian on the Walking Dead.