Who do you think the three unidentified characters in Test Subject Arena 2 are going to be? We already know a Mercenary, the Professor, and orange enzyme are confirmed because they were in the preview image, and Blue and Green were already in Test Subject Arena 1, so that leaves us with 3 unknown characters. I'm guessing they are The Machine, Dr. Nastidious, and the Rex209. Place your guesses in the comments!

P.S. Someone, please take the dancing professor from the below gif and crop it. NOW. Test Subject Arena 2 Preview

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