I have a theory of who the Undead Prophet might be. It might be kind of a dumb theory but its just who I think it might be. I think the undead prophet may Victor, one of the scientists who came up with the serum. I think it might be him because of some of the things he's said about them. It almost seems like he is sympathetic to the PDS sufferers and it would make sense as to how he'd be able to talk and communicate to Simon while he was in the treatment center.
I think the undead prophet is someone who worked at the treatment centre. I'm thinking Dr Russo as we found out he trained at Norfolk in ep6.











