I mean, Apollo kinda can't be mafia imo. Only possible way for him being mafia would be that indigo/ultra 1.0 messed up extra kill mafia had (which would be wild) and Ultra 2.0 subbed in for scum, so he's not going to share that information. They don't seem like teammates to me tbh. So at very worst he's Serial Killer who didn't kill N1 (well, or killed the same target as mafia) but at this point of the game, I'd rather have a chance of SK killing mafia.
Can you tell me more about Saber read? Ngl, I can't see how he's any different than Gad tbh.