Mutants

A Mutant is any being who has been exposed to Mutagen and undergone some form of transformitive mutation.

Definition
The idea of a mutant is a common trope in comic books and science fiction. The new phenotypes that appear in fictional mutations generally go far beyond what is typically seen in biological mutants, and often result in the mutated life form exhibiting superhuman abilities or qualities.

Within the realm of TMNT, the term "mutant" is almost exclusively used to describe any being who has been affected by mutagen, rather than any naturally occurring mutations. Mutagen can mutate a being in numerous ways, ranging from animals taking on human traits (such as The Turtles and Splinter) to humans taking on animal traits (such as Bebop and Rocksteady), to either taking on the traits of other objects (such as Muckman) or simply growing in size and strength (such as the Super Shredder). The 1987 TV series stated that whatever was being mutated would take on the traits of the last living thing it touched. This is not stated in any other series, and would seem contradictory in many cases.

The Mutagen exposure is the same in the 2012 series. According to a Kraang operative in Pulverizer Returns!, the Mutagen is unpredictable. It was also shown that if anyone is exposed to Mutagen and hasn't come in contact with anything animal or plant-related, they will end up turning into a mutant blob.

Mirage

 * Donatello - Mutant Turtle
 * Leatherhead - Mutant Alligator
 * Leonardo - Mutant Turtle
 * Michelangelo - Mutant Turtle
 * Raphael - Mutant Turtle
 * Shredder Elite
 * Splinter - Mutant Rat
 * Bloodsucker - Mutant Leech

Movies

 * Donatello - Mutant Turtle
 * Leonardo - Mutant Turtle
 * Michelangelo - Mutant Turtle
 * Rahzar - Mutant Wolf
 * Raphael - Mutant Turtle
 * Splinter - Mutant Rat
 * Super Shredder - Humanoid Mutant
 * Tokka - Mutant Alligator Snapping Turtle

1987 series

 * Leonardo - Mutant Turtle
 * Donatello - Mutant Turtle
 * Raphael - Mutant Turtle
 * Michelangelo - Mutant Turtle
 * Hamato Yoshi/Splinter - Mutant Rat
 * Bebop - Mutant Warthog
 * Rocksteady - Mutant Rhinoceros
 * Bebop and Rocksteady's Gang
 * Scrag - Mutant Bat
 * Yellow Mohawk Punk - Mutant Lizard
 * Punk with the Cap - Mutant Dog
 * Mondo Gecko - Mutant Gecko
 * Muckman - Garbage Mutant
 * Joe Eyeball - Garbage Mutant
 * Mutagen Man - Mutant Blob
 * Napoleon Bonafrog - Mutant Frog
 * Genghis Frog - Mutant Frog
 * Rasputin the Mad Frog - Mutant Frog
 * Attila the Frog - Mutant Frog
 * Scumbug - Mutant Cockroach
 * Baxter Stockman - Mutant Fly
 * The Two-Headed Bull from Mutagen Monster
 * Slash - Mutant Turtle
 * Groundchuck - Mutant Cattle
 * Dirtbag - Mutant Mole
 * Leatherhead - Mutant Alligator
 * Tokka - Mutant Alligator Snapping Turtle
 * Rahzar - Mutant Wolf
 * A. J. Howard - Mutant Slug
 * H.A.V.O.C.
 * Titanus - Humanoid Mutant
 * Raptor - Mutant Bird
 * Overdrive - Mutant Cheetah
 * Highbeam - Mutant Dragonfly
 * Amok - Mutant Goat
 * Magma - Lava Mutant
 * Seizure - Mutant Centipede
 * Cobrato - Mutant Snake
 * Tattoo - In the 80's cartoon, Tattoo was a mutated hamster.
 * Carter - Humanoid Mutant
 * Synapse - Electric Mutant
 * Grillox - Alien Mutant
 * Mona Lisa - Mutant Lizard
 * Gargon - Alien Mutant

Archie

 * Leonardo - Mutant Turtle
 * Donatello - Mutant Turtle
 * Raphael - Mutant Turtle
 * Michelangelo - Mutant Turtle
 * Hamato Yoshi/Splinter - Mutant Rat
 * Bebop - Mutant Warthog
 * Rocksteady - Mutant Rhinoceros
 * Scrag - Mutant Bat
 * Man Ray - Mutant Manta Ray
 * Leatherhead - Mutant Alligator
 * Chameleon - Mutant Chameleon
 * Scumbug - Mutant Cockroach
 * Wyrm - Mutant Worm
 * Mondo Gecko - Mutant Gecko
 * The Uncanny Trio
 * Hallocat - Mutant Cat
 * Nevermore the Scare-Crow - Mutant Crow
 * Nocturno the Owl - Mutant Owl
 * Verminator-X - Mutant Cat Cyborg
 * Armaggon - Mutant Blue Shark
 * Merdude - Mutant Fish
 * Perri Grey - Mutant Flying Squirrel
 * Manmoth - Mutant Manmoth

Next Mutation

 * Leonardo - Mutant Turtle
 * Donatello - Mutant Turtle
 * Raphael - Mutant Turtle
 * Michelangelo - Mutant Turtle
 * Splinter - Mutant Rat
 * Venus de Milo - Mutant Turtle

2003 series

 * Leonardo - Mutant Turtle
 * Donatello - Mutant Turtle
 * Raphael - Mutant Turtle
 * Michelangelo - Mutant Turtle
 * Splinter - Mutant Rat
 * Leatherhead - Mutant Alligator
 * Dark Turtles
 * Dark Leo
 * Dark Don
 * Dark Raph
 * Dark Mike
 * Underground Monsters - The humans that were transformed have gained their monstrous appearances from the Foot Clan's experiments.
 * Quarry
 * Razorfist
 * Stonebiter
 * King Nail
 * Underground Cyclops Monster
 * Underground Insectoid Monster
 * Underground Spider Monster
 * Shredder Elite - Genetic experiments of the Shredder.
 * Minnetonka Mutant - Mutant Cockroach
 * Hun (Turtles Forever) - He mutated into an Alligator Snapping Turtle during the special.
 * Mutant Foot Soldier
 * Tokka (Turtles Forever) - Mutant Alligator Snapping Turtle. He was mutated from a Foot Ninja.
 * Rahzar (Turtles Forever) - Mutant Wolf. He was mutated from a Foot Ninja.
 * Purple Dragons (Turtles Forever)

IDW Series

 * Leonardo - Mutant Turtle
 * Donatello - Mutant Turtle
 * Raphael - Mutant Turtle
 * Michelangelo - Mutant Turtle
 * Splinter - Mutant Rat
 * Old Hob - Mutant Cat
 * Alopex - Mutant Arctic Fox
 * Slash - Mutant Turtle
 * Rocksteady - Mutant Rhinoceros
 * Bebop - Mutant Warthog
 * Flyborg - Mutant Fly

2012 series

 * Leonardo - Mutant Turtle
 * Donatello - Mutant Turtle
 * Raphael - Mutant Turtle
 * Michelangelo - Mutant Turtle
 * Hamato Yoshi/Splinter - Mutant Rat
 * Leatherhead - Mutant Alligator
 * Chris Bradford/Dogpound/Rahzar - Mutant Dog/Akita
 * Xever/Fishface - Mutant Fish
 * Snakeweed - Mutant Plant
 * Spider Bytez - Mutant Spider
 * Dr. Tyler Rockwell - Mutant Monkey
 * Pete - Mutant Pigeon
 * Justin - Composite Mutant
 * Spy-Roach - Mutant Cockroach
 * The Pulverizer/Timothy/Mutagen Man - Mutant Blob
 * Parasitica Wasp - Mutant Wasp
 * Newtralizer - Mutant Newt
 * Kirby O'Neil/Wingnut - Mutant Bat
 * Squirrelanoid - Mutant Squirrel
 * Ice Cream Kitty - Mutant Cat/Ice Cream Hybrid
 * Sir Malachi - Mutant Sparrow
 * Tiger Claw - Mutant Tiger
 * Baxter Stockman - Mutant Fly
 * Spike/Slash - Mutant Tortoise
 * Victor Falco/Rat King - Mutant Rat
 * April O'Neil - Human/Kraang Mutant

Toys
This section details mutants that only appeared as action figures in the TMNT toylines.


 * Ace Duck - Mutant Duck
 * Doctor El - Mutant Elephant
 * Halfcourt - Mutant Giraffe
 * Hot Spot - Mutant Dalmatian
 * King Lionheart - Mutant Lion
 * Monty Moose - Mutant Moose
 * Pizza Face - Mutant Pizza Chef
 * Sandstorm - Mutant Dromedary
 * Sergeant Bananas - Mutant Gorilla
 * Walkabout - Mutant Kangaroo