Chemical Z is a rare verison of Chemical X. It makes it's debuted in the motion-picture movie The Over Dimension. It had created The Rockette Girls, who is a mixtion of sour, spicy, and everything bitter. It appears that Chemical Z is a more powerful version of Chemical X, witnessing The Rockettes powerful powers. They were created by Professor Twit, a rebellious, selfish man, who shows no respect for others. It is unknown wether or not Twit is made out of Chemical Z judging by his appearance alike the girls.