- Guys from earlier 1
- Random crazy person
- Guys from earlier 2
- The comment (quote is from last sentence in panel 4)

If nothing else, Catalina has proven that people are perfectly capable of attempting bad plans.

And yes! There are SUSPECTS. Gang's got a mystery to solve! Is there someone wearing a monster mask at the end of all this? Time will tell.

That said, I received a whole lot of interesting theories over the weekend regarding the identity of the original poster. I can't outright deny any of these without it being a spoiler, so I guess all of these characters are now suspects, too:

Charlotte
Diane
Elliot
Grace
Greg
"Jerry"
Justin
Melissa
Noah
Rhoda

It's possible I've forgotten some characters, and I think the Elliot suggestion was a joke (seeing as they basically said it was), but there ya go.

Oh, and for anyone unaware: Mega Man is a video game series in which there are a bunch of bad guys named "______ Man", like "Magnet Man", "Cut Man", and yes, "Wave Man".