User blog comment:TDSkavefan/Who I think is TDPI's main antagonist/@comment-25312468-20140526052622/@comment-24971793-20140528150315

Don't forget Scarlett, I love the theory that since she seems to be very calculated it could be that she becomes "the sidekick" of Max to make up for his incapabilities (and maybe even take over). Although I don't think this will be the case, she seems sweet and I can't really imagine what her motive would be to pair up with Max. But it's an interesting theory at least. It would be unexpected and an original villain.

Another suspect is Ella, since she's very dramatic she could be both a princess and a witch. Similar to the Mike/Mal thing. That would be highly unlikely since it's unoriginal and she seems to be fodder. But it's a possible theory some believe in.

So yeah it seems like we have antagonist theories about every contestant besides Dave and Leonard (or maybe I just missed those).