After reading through what Omni said I get some other interesting points, which leads me to another suspect of mine: Pierre the Scarecrow. I really didn't think too much about it but after re-reading I get Traitor-ish vibes from him. This is because he speculated a lot about characters and voiced opinions on players, which gives mafia info.
In his
206 he takes a clear stance against nameclaims but now prematurely asks Kevin to nameclaim before the town members have even discussed all options? Pierre basically
tells us and the mafia in that, which characters he thinks have PRs. Kinda like "Hey scum, those guys are PRs! NK them if they're claimed!".
His
275 is a textbook example of traitor play. Hand all information on players to the mafia in a nicely sized post, which covers every single player. The first mentioned players are of course the "obvtowns", the trustworthy players. This is basically like saying "Hey scum, these guys are trustworthy and look like town! I'd be a good idea to NK them!"
I've seen a post like that before, when I was reading through the DG archives - it was Scav, who posted something very similar D1 in High School Mafia. Guess what? - He was the traitor! Overall I think my FoS against him is justsified.