Understand that I'm not saying that I think everyone else is town. I'm saying that I haven't seen any evidence of scum intent in their posts. Depending on whether both Anonymous and Mai, or which one of Anonymous and Mai, or for that matter whether someone else gets lynched before either of them and flips scum, as well as on how the other players behave during those lynches, my pick for third scum could still change. Trying to guess the whole scumteam when there are eight players out there whose alignment you don't know is just foolish.
That said:
Assuming a LyLo with Cage, CATS, Comedian, Crocker, Chitose, Monoe, and Protoman... That would mean that every single wagon so far has been Town/Town. Would be difficult to find scumtells based on scum interaction in such circumstances - they'd have no need to acknowledge each other much at all.
Primary clue to scum intent in that situation would be a lack of caring which wagon gets lynched. Not a very reliable scumtell, since it's quite possible for a townie to believe both wagons to be on scum, but since I haven't picked up any notable scumminess that stands on its own among any of these players, and there would be no scumflips to go on, it'd have to do.
I think the scummiest player by that metric would actually be Protoman. Day One, he didn't throw his weight one way or the other over whether it was Sailor Moon, Kyon, or Prinny that got lynched. He was present right up to the deadline, asking lots of questions and poking at everyone for responses, but he placed down no vote on either Sailor Moon or Prinny despite the wagons being quite close.
D2 he chased CATS all day and only voted Sailor Moon after she had pretty much collapsed and guaranteed that she'd be the lynch. Again, lots of questions, lots of activity, lots of motivation, but a lack of strong preference between the two wagons.
D3 he declared a whole scumteam
here, all of whom he's apparently dropped any case on, and none of whom were likely candidates for the lynch that day. Taking all three of those days together, it strikes me as strange that Protoman has not yet been on one of the lynching wagons before that lynch became basically inevitable. And now that today Anonymous, his main case from yesterday, is looking to get lynched, he's jumped cases again.
So, continuing the hypothetical, if we were to lynch Protoman in D5 LyLo and get a scumflip, I suppose the most obvious buddy would be Cage, as Protoman's dogged pursuit of him when there was really no hope of getting a lynch is basically a textbook example of how bussing is supposed to work. My pick for their buddy would in turn depend a whole lot on events during LyLo, but I suppose if I had to wager a guess right now I'd pick Chitose, mostly for the quickness with which Protoman dropped his case on her as quickly as he did his Anonymous case, and without even the flimsy reasoning of all his other scumpicks going for Anonymous.
Anyway, it's a more interesting thought experiment than I thought it'd be, but it doesn't really make a difference. With the situation that's actually before us, I don't think Protoman is scum. Mai's opinion shifts are more drastic and even more poorly justified than Protoman's, Anonymous's cases over the course of the game have certainly made less sense from a townie perspective than Protoman's, and even if they are both town, I can't imagine one getting nightkilled if we lynch the other today. I suppose it's possible that Protoman is scum with one or both of Anonymous and Mai, but I'd have to evaluate connections between them separately from all this. The point is, it doesn't make much of a difference from the perspective of today.