Related Clues:

• Like a Ninja Turtle?
• One of 'them'
• Genetic surprise
• Genetic anomaly
• Sci-fi character
• Any of the X-Men, e.g.
• Sci-fi critter, often
• Like some genes
• Sci-fi changeling
• Like the X-Men
• Sci-fi beastie
• Like certain teenage turtles
• Sci-fi hybrid
• Sci-fi oddity
• Genetic oddity