Finally watched this. Based on what I'm seeing here I'm gonna go with The Grim Reaper with a combination of Agnes as an underling. Grim Reaper controlling Wanda using some sort of tech for the "tv show" aspect of it all. New Rockstars guy did mention how much tech is used in the comics, plus the easter egg of the helmet makes me think that's gotta be it. Too many similarities, but that could be the misdirection they're trying to play.
Either way though, I very much enjoy this show for what it is, and am looking forward to finishing out the series!