When Mrs. O'Neil was in the woods and was going to throw Mutagen into a pond with frogs, Michelangelo knocked off the canister from her hands. But then, the Mutagen was able to mutate all of the frogs from the pond. These frogs mutated into mutants that are now known as the Punk Frogs. One of these frogs was named Genghis Frog.
- Genghis hates humans like the rest of the Punk Frogs, except for Napoleon Bonafrog.
- He was the general of the team, but then Napoleon took the role.
- This is due to the fact that Attila The Frog saw Napoleon as a brave frog.
- Genghis is the tough one of the Punk Frogs, just like Raphael is the tough one of the Ninja Turtles.