Possible Clues:

• Turn your stomach, the insect would, for a change
• Sci-fi oddity
• It'll turn your stomach for a change, that six-footer will
• That'd turn your stomach over an insect for a change
• Like the X-Men
• Organism that has diverged from type
• Part of TMNT
• Genetic anomaly such as Magneto
• Living thing that undergoes genetic change
• Like some genes