User blog comment:Matteso586/Matteso586 Episode Ideas/@comment-17725410-20120421094151/@comment-6345422-20120421211728

The boys and them were playing make believe. They weren't actually attacking each other until Kenny threw his ninja star. Professor Chaos and Butters are not different characters. Professor Chaos is an alter ego. If Butters was planning something or had done something, he wouldn't act normal when he isn't in his Professor Chaos costume, the classroom scene in "Professor Chaos" is an example.