Naturally, fans immediately began speculating on who the spinoff series would focus on. Fred Armisen as Uncle Fester in episode 204 of Wednesday | NetflixFred Armisen confirms Uncle Fester spinoff at NetflixOn the Sept. 8 episode of The Tonight Show Starring Jimmy Fallon, Emmy-nominated actor Fred Armisen appeared as Fallon’s guest. That said, there probably hasn't been any progress on a spinoff series besides initial brainstorming and discussions. But at least we now know for sure that Uncle Fester will be getting his own spotlight. He starts talking about the Uncle Fester spinoff at the 9:04 mark.