Teenage Mutant Ninja Turtles (2012 series)

Four ninja turtles, mutated by a mysterious alien substance, must rise up out of the sewers and defend their city against evil forces from both the past and present.

Teenage Mutant Ninja Turtles:
The Teenage Mutant Ninja Turtles are a team of humanoid mutant red-eared slider turtles who were hidden ever since their mutations within the sewers of New York City and usually go up to the surface only in the night time.
 * Leonardo / "Leo" (voiced by Jason Biggs up until "The Wrath of Tiger Claw", Dominic Catrambone for the remainder of season 2, Seth Green starting in season 3) - Is an enthusiastic ninjutsu student, wears a blue mask, and fights with two swords called Niten Ryu.
 * Donatello / "Don" or "Donnie" (voiced by Rob Paulsen) - Is in charge of the design and manufacture of all of the tools and weapons in the Turtles' arsenal. He is also a gifted hacker. He wears a purple mask and fights with a rokushakubo which converts to a naginata via a blade inside one end of the staff.
 * Raphael / "Raph" (voiced by Sean Astin) - Wears a red mask and fights with two sai. Known for his rage, he commonly takes it out on Mikey, and on occasions Leo, due to their feud.
 * Michelangelo / "Mikey" (voiced by Greg Cipes) - Is the youngest of the turtles and is a lover of video games, skateboarding, pranks and pizza. He wears an orange mask and fights with two nunchaku which convert into kusarigama via a blade inside of one of the sticks of each nunchaku and extra lengths of chain stored in the other.

Allies:

 * Hamato Yoshi / Splinter (voiced by Hoon Lee) - Hamato Yoshi is the son and heir of Hamato Yūta, the leader of the Hamato Clan whose rivalry with the Foot Clan came to an end when he was a child. During a confrontation with the Kraang, Hamato Yoshi was mutated into a mutant brown rat upon coming into contact with a brown rat prior to the conflict. He has since trained the Turtles in ninjitsu.
 * April O'Neil (voiced by Mae Whitman) - The 16-year-old daughter of Dr. Kirby O'Neil and the love interest of Donatello and Casey Jones.
 * Casey Jones (voiced by Josh Peck) - The 17-year-old son of a former NHL player at April's school who April is hired to tutor for an extra credit assignment. He later became an ally of the Turtles.
 * Chompy Picasso - Tokka's baby and Raphael's new pet.
 * Hamato Miwa / Karai (voiced by Kelly Hu) - Hamato Miwa is the 16-year-old daughter of Hamato Yoshi (Splinter) who as a baby was taken away from Splinter by Oroku. She was their enemy at first but soon became an ally after learning the truth about her parents. She later mutated into a shapeshifting mutant albino horned viper.
 * Timothy / Pulverizer / Mutagen Man (voiced by Roger Craig Smith) - Timothy was an ineffective teenage ice cream truck vendor fights crime as Pulverizer after witnessing the Turtle's first battle with Baxter Stockman. Due to not coming into any contact with any animal or plant, Timothy dissolved into a mutagen-drinking blob called Mutagen Man.
 * Jack J. Kurtzman (voiced by Robert Forster) - A private investigator and journalist investigating the disappearance of Kirby O'Neil and other missing scientists.
 * Ice Cream Kitty (vocal effects provided by Kevin Eastman) - A stray tabby cat that April finds in an alley and, deciding to find it a home, asks Mikey to raise as his pet. It mutated into Ice Cream Kitty upon eating Neapolitan Ice Cream that was covered in mutagen.
 * Mighty Mutanimals - A team of mutant animals that debut in "Battle for New York" Pt. 1. They were brought together by Jack J. Kurtzman to fight the Kraang.
 * Spike / Slash (voiced by Corey Feldman) - Spike is Raph's pet turtle. In the second season, Spike is transformed into Slash after jumping into spilled mutagen.
 * Leatherhead (voiced by Peter Lurie) - A Sewer alligator that was mutated by the Kraang.
 * Pete (voiced by A. J. Buckley) - A pigeon that was mutated by the Kraang and has a fondness with sourdough.
 * Dr. Tyler Rockwell/Monkey Brains (vocal effects provided by Frank Welker in "Monkey Brains", speaking voice by Tom Kenny starting with "Battle for New York") - Dr. Tyler Rockwell is a neurochemist who was mutated into a mutant monkey by Dr. Victor Falco.
 * Jason / Mondo Gecko (voiced by Robbie Rist) - Jason was a popular high school skateboarder who while was skating his way home was hit on the head by a canister of mutagen that was accidentally dropped from the sky by the Turtles. He mutated into a mutant leopard gecko due to his pet leopard gecko being on his shoulder at the time.
 * Bigfoot (voiced by Diedrich Bader) - A cryptid that the Turtles encountered in the woods of Northampton, Massachusetts.
 * Punk Frogs - A group of humanoid mutant frogs that are the results of mutagen being dumped near their pond during Mikey's fight with Mom-Thing in "Buried Secrets".
 * Attila the Frog (voiced by Maurice LaMarche) - The leader of the Punk Frog.
 * Genghis Frog (voiced by Kevin Michael Richardson) - The militaristic member of the Punk Frogs.
 * Rasputin the Mad Frog (voiced by Maurice LaMarche) - Attila the Frog's right-hand frog.
 * Napoleon Bonafrog (voiced by Jon Heder) - The laid-back member of the Punk Frogs.
 * Frog Soldiers - A group of mutant frogs led by Genghis Frog and later by Napoleon Bonafrog.
 * Bernie (voiced by Bill Moseley) - A physicist who discovered the Dream Beavers forty years ago.
 * Dr. Cluckingsworth - A white chicken at the O'Neil Family summer house that develops a large brain-shaped cranium at the top of her head after ingesting the mutagen sample taken from Donnie after it leaks from Speed Demon.
 * Garson Grunge / Muckman (voiced by Nolan North as a human, Grant Moninger as of "The Noxious Avenger") - Garson Grunge was a humble sewer worker who had encounters with mutants in the past. While working as a garbage man, he was accidentally mutated into a garbage mutant with garbage-controlling abilities.
 * Joe Eyeball (voiced by Grant Moninger) - Joe Eyeball was originally Garson's left eye until it gained a form of his own during the mutation.
 * Renet (voiced by Ashley Johnson) - A young, immature time sorceress and the girl who Mikey has a crush on and who seems to reciprocate some of his feelings.
 * Lord Simultaneous (voiced by Jim Piddock) - Lord Simultaneous is a time master who is Renet's boss and father.
 * The Hamato Clan - The ninja clan that produced Hamato Yoshi, and the ancestral enemies of the Foot Clan.
 * Hamato Yūta (voiced by Hoon Lee) - Hamato Yoshi's father and the adopted father of Oroku Saki, and the last leader of the Hamato Clan before the Shredder came to power.
 * Tang Shen (voiced by Minae Noji) - Hamato Yoshi's late wife and the mother of Miwa, Tang Shen was a Japanese woman with some Chinese ancestry.
 * Hamato Soldiers - A group of ninjas that make up the infantry of the Hamato Clan.
 * Professor Zayton Honeycutt / Fugitoid (voiced by David Tennant) - Zayton Honeycutt was an alien scientist from Dimension X. He originally created the Heart of Darkness as a power source until he was bribed by Kraang Subprime to sell it to them. Professor Honeycut was reconstructed into an android after his body was destroyed by a Triceraton attack on his lab with his brain left intact. He replaces Splinter as the Turtle's mentor for the first half of the fourth season after he saved the Turtles, April, and Casey with his ship the Ulixes.
 * Shinigami (voiced by Gwendoline Yeo) - A witch who is a member of Karai's part of the Foot Clan. She is an old friend of Karai and assists her in retaking the Foot Clan in order to rectify the wrongs they committed. Shinigami's mystical abilities range from teleportation, hypnosis, and turning into a black cat.
 * Wingnut (voiced by Daran Norris) - An alien brown bat superhero who is a character from Michelangelo's comic book. He was brought to life by April O'Neil's crystal.
 * Screwloose (voiced by Jeff Bennett) - An alien mosquito who is Wingnut's sidekick. He was brought to life by April O'Neil's crystal.

Antagonists:

 * Foot Clan: The Foot Clan is a ninja criminal organization that was founded 1,500 years ago in Japan by an ninja named Koga Takuza when he forged an alloy stronger than steel from the stolen sacred totems of his defeated adversaries to fashion a helmet known as the Kuro Kabuto.
 * Oroku Saki / Shredder (voiced by Kevin Michael Richardson) - The leader of the Foot Clan and one of the two main antagonists of the series. Adopted by the Hamato Clan after the original Foot Clan were defeated, Saki was raised as a brother to Yoshi until spurred by both his unrequited feelings for Tang Shen and learning his true heritage. As a result of an ensuing battle, Shredder was left badly burned and scarred after unintentionally killing Shen, leaving Yoshi to die while stealing away his daughter Miwa to raise as his own child. Upon learning of Yoshi's survival, and later his mutation into Splinter, Shredder vowed a vendetta against him and the turtles. This led to his dealings with the Kraang and ultimately placing his want to kill Splinter over his own survival. He was the main antagonist in the first half of Season 1 until the Krang took the role, then he became the main antagonist in the first half of Season 2, and now he is the main antagonist of the second half of Season 4.
 * Chris Bradford / Dogpound / Rahzar (voiced by Clancy Brown) - Chris Bradford was a world-famous martial artist who is secretly a prized member of the Foot Clan, armed with a 400-year-old katana and owning a chain of dojos across the country for the purpose of recruiting Foot Soldiers. He mutated into the mutant Akita called Dogpound as a result of being bitten by Shredder's pet Akita Hachinko, hampering most his fighting abilities as he attempted to find a means to restore his humanity. But being knocked into a mutagen vat caused Bradford to mutated further into a near-skeletal werewolf-like form and is referred to as Rahzar since.
 * Xever Montes / Fishface (voiced by Christian Lanz) - Xever Montes was a Brazilian street urchin who was left to roam the criminal underworld of São Paulo, eventually being recruited by the Shredder after attempting to steal something belonging to him. He later mutated into the mutant snakehead Fishface after touching a snakehead in a Chinatown marketplace. Following the mutation, he wears a water-breathing rig and mechanical legs developed by Baxter Stockman.
 * Baxter Stockman / Stockman-Fly - (voiced by Phil LaMarr) - Baxter Stockman was a child prodigy who tried proving his brilliance at a science fair at school by presenting a volcano with real lava, which ended up burning down the gym and getting him expelled. Baxter was eventually brought into Shredder's services and reversed-engineered much of the Kraangs' technology before he briefly escaped. After being recaptured, Stockman was outfitted with a mutagen collar to hinder any further treachery. But after failing a few more times, the collar is triggered and Stockman is mutated into a mutant housefly while later placed in charge of mutagen experiments.
 * Chrome Dome (voiced by Nolan North) - A ninja android in a dark ninja outfit (which resembles Chris Bradford's full ninja outfit) armed with a plasma sword and whip. Chrome Dome was originally built by the Kraang to keep the Foot Clan sufficient with their invasion plan.
 * Tiger Claw (voiced by Eric Bauza) - Tiger Claw was a Japanese circus performer who was mutated by the Kraang as a child into a 6 1/2 ft. humanoid mutant Bengal tiger with razor-sharp fangs and claws, heightened smell, and superhuman strength. He subsequently became a dangerous assassin, though a rival previously removed his tail. He later lost his eye following his first engagement with the Turtles and ended up in the 1987 cartoon series dimension, but eventually returned and became Shredder's second-in-command.
 * Ivan Steranko / Rocksteady (voiced by Fred Tatasciore) - Ivan Steranko was a Russian arms dealer and artifact collector with a gold tooth and a diamond right eye, who is an old friend and business partner of Shredder. However, a falling out resulted in Steranko being mutated into a mutant white rhinoceros called Rocksteady upon being pushed into a mutagen vat filled with white rhinoceros DNA.
 * Anton Zeck / Bebop (voiced by J.B. Smoove) - Anton Zeck was a professional thief in a high-tech suit with a purple X-ray visor and armed with high-tech gadgets. Hired by Steranko to steal the Kuro Kabuto, Zeck was later mutated into a mutant common warthog called Bebop upon being shoved into a mutagen vat filled with common warthog DNA.
 * Shredder Mutants - A trio of mutant clones created by Stockman-Fly from the DNA of the Shredder and different crustaceans. They serve as the guards of the Foot Clan's lab. While Mikey fights Stockman-Fly, the others fight the Shredder Mutants. Once Splinter manages to regain his mind, he defeats the Shredder Mutants by kicking them into the giant fan below. In "Meet Mondo Gecko," silhouettes of a second set of Shredder Mutants are seen among the audience during the race. In "Attack of the Mega Shredder!", the Shredder Mutants were tricked into the mutagen vat by Bebop and Rocksteady, fusing them into a giant crustacean abomination called the Mega Shredder that went on a rampage in the city before it was destroyed by the Turtle Mech.
 * Shiva Shredder (voiced by Kevin Michael Richardson) - A large four-armed clone of Shredder who was created from the DNA of Shredder and a crab which also gives him a crab shell.
 * Claw Shredder (voiced by Kevin Michael Richardson) - A clone of Shredder who was created from the DNA of Shredder and a lobster which also gives him lobster-like claws and tail.
 * Mini Shredder (voiced by Kevin Michael Richardson) - A miniature clone of Shredder who was created from the DNA of Shredder and a shrimp which also gives him a shrimp moustache and a shrimp tail.
 * Mega Shredder - A giant abomination created when Bebop and Rocksteady tricked the Shredder Mutants into the mutagen vat which fused them together. It was destroyed by the Turtle Mech.
 * Foot Soldiers - An army of ninjas loyal to Shredder, making up the soldiers of the Foot Clan.
 * Footbots - An army of robotic Foot Soldiers created by the Kraang Hive Mind to strengthen the Foot Clan. The Footbots can adapt to any move and have retractable arms as well as sporting retractable fabric wings for gliding.
 * Elite Footbots - The stronger versions of the Footbots that were created in order to strengthen the Foot Clan during it's civil war with Karai's faction. They resemble Chrome Dome except for the fact that they wear metal kasas on their heads.
 * Kraang: The Kraang are a race of brain-shaped aliens from Dimension X, piloting robotic bodies called Kraangdroids that are responsible for bringing some mutagen to Earth a thousand years ago. As revealed in "The War for Dimension X", the Kraang are actually Utroms that are now psychically controlled by Kraang Prime resulting in the Kraang Hive Mind. As they became extensions of Kraang Prime's will with trace remnants of individuality, they have not mastered English and communicate in redundant speech. The Kraang also have enemies in the form of the Triceraton Empire and the Utroms who Kraang Prime could not place under mind control. Among the known Kraang are:
 * Kraang / Kraang Prime (voiced by Roseanne Barr in season 1 and 2, Rachel Butera in season 3) - A 25 ft. brain-shaped alien who is the leader of the Kraang and one of the two main antagonists of the series. Originally an Utrom scientist, Kraang discovered mutagen within the Kraathatrogon worms and used his research to evolve into his current state while using his gained psychic powers to enslave most of his species and rename them after himself. He is the main antagonist in the second halves of Seasons 1 and 2, while being the main antagonist in the first half of Season 3.
 * Knight / Kraang Subprime (voiced by Gilbert Gottfried) - An Utrom turncoat with a robotic left eye, a huge scar, a blue tattoo across his right eye, and a robotic claw on his left front tentacle. Serving as the Kraang's master spy, being the only one among them to fully master the human language, Subprime poses as Irma Langinstein (voiced by Kate Micucci), April O'Neil's best friend in high school. Prior to joining the Kraang willingly and revealed to be Bishop's brother as well as a hero among their kind, Subprime was originally known as Knight.
 * Mrs. Campbell (voiced by Cassandra Peterson) - A research scientist from the World Wide Genome Project who takes an interest in April O'Neil who is revealed to be an unpiloted Kraangdroid.
 * Kraang Soldiers (voiced by Nolan North) - The generic foot soldiers of the Kraang. They mostly move around in the Kraangdroid bodies and the "Normans" which they use to blend into human society
 * Biotroid - A Yeti-type bio-mechanical suit with powerful arms, blades on its nipples, and butt cannons.
 * Dracodroid - A two-headed cyborg dragon creature created by the Kraang that serves as their mode of transportation.
 * Irma-Bots - A bunch of androids that resemble Kraang Subprime's Irma Laginstein disguise that were originally based on the designs by the Utrom Rook.
 * Triceraton Empire: The Triceraton Empire is an empire that is inhabited by Triceratons, a race of Triceratops-like aliens. Triceratons breathe nitrogen and the oxygen in Earth's atmosphere can lead to delusions. The Triceraton Empire has been at war with the Kraang for some time, a conflict that has resulted in the destruction of the Triceraton homeworld through the Heart of Darkness (a black hole generator) and thus left the Triceratons obsessed with annihilating their enemies by any means necessary such as destroying any planet that the Kraang want to take over. In the first half of the fourth season, they replace the Kraang and the Foot Clan as one of the main villains in the series. With the exception of Captain Mozar, all the Triceratons introduced so far have names that start with Z. Among the known Triceratons are:
 * Emperor Zanmoran (voiced by Michael Ironside) - The ruler of the Triceraton Empire, a 250-centimeter (8.2 ft) Triceraton with a more ornate uniform including a cape. Zanmoran is a sadistic ruler, having decreed Earth's destruction due to its Kraang infestation. After the Turtles travel back in time to prevent this, they are captured during their infiltration of the Triceraton Mother Ship, and their efforts impress Zanmoran enough that he orders them to be thrown into the arena. When the Fugitoid is captured during an effort to rescue them, Zanmoran attempts to force him to repair the Black Hole Generator, but he refuses. The Turtles subsequently escape by briefly taking Zanmoran hostage.
 * Mozar (voiced by Michael Dorn) - The Supreme Commander of the Triceraton fleet with a broken horn and a prosthetic beak, initially introduced as a captain. He is a 250-centimeter (8.2 ft) Triceraton who is a cunning and brutal military commander. He answers only to the Triceraton Emperor and aims to destroy the enemy at any cost. He debuts in "Annihilation: Earth" Pt. 1 where he leads the Triceraton invasion on Earth to destroy it and thus prevent the Kraang from using it as a new homeworld, and employs the Heart of Darkness previously used by the Kraang to destroy the Triceraton homeworld. However, the Turtles escape Earth's destruction and then travel back in time six months in an effort to prevent this event from happening. They would eventually cross paths with Mozar during their quest where he was promoted to Admiral for successfully retrieving the first piece of the Heart of Darkness. It is later stolen back by the Turtles during their raid on Emperor Zanmoran's ship. Mozar was later demoted back to Captain by the time he attacked the Ulixes in order to reclaim the Heart of Darkness fragment. Despite the fact that the Skeevix Virus launched at the Ulixes was defeated, his soldiers were successful at reclaiming the two fragments of the Heart of Darkness. He is the main antagonist in the second half of Season 3, while he is the main antagonist in the first half of Season 4.
 * Sergeant Zog (voiced by Lance Henriksen) - A 260-centimeter (8.5 ft) Triceraton who serves as a scout for the Triceraton army. He debuts in "Dinosaur Seen in the Sewers!" where he temporarily befriends Raphael. Due to being poisoned by Earth's atmosphere, he is initially delusional, striking at virtually any being he comes across and rambling on about his mission. After recovering his equipment at the Statue of Liberty, he recognizes Raphael's deception and attacks him before launching a beacon to summon the Triceraton armada to Earth. Left clutching onto a ledge on the Statue of Liberty, Zog refuses Raphael's offer of help and drops from the torch, apparently to his death declaring "Long Live the Triceraton Empire."
 * Commander Zoran (voiced by Kevin Michael Richardson) - A commander in the Triceraton army.
 * Commander Zorin - The second-in-command of the Triceratons who assisted Mozar in the attack on Earth.
 * Sergeant Zark - A sergeant of the Triceraton army who assisted Mozar in the attack on Earth.
 * General Zera (voiced by Kate Mulgrew) - A female Triceraton that was introduced in the TV film Half-Shell Heroes: Blast to the Past. She is in command of a Triceraton operation in the Cretaceous period seeking to obtain the rare mineral Chronite and use its time traveling properties to conquer and plunder various time periods. Despite commanding a Triceraton garrison, a force of Robot-Raptors, and a Robo-Spinosaurus, she was defeated by the Turtles and their dinosaur allies.[6] Zera is the first known case of a Triceraton female in the series, as all other Triceratons who have appeared onscreen have shared the stereotypical male design.
 * Lieutenant Zorg (voiced by Fred Tatasciore) - An overweight Triceraton who serves under General Zera.
 * Lieutenant Zovox (voiced by Michael Dorn) - A Triceraton that accompanied Captain Mozar to the planet Xaava-Dal.
 * Zarus (voiced by Kevin Michael Richardson) - A Triceraton scientist who accompanied Captain Mozar to the planet Xaava-Dal.
 * Zeno (voiced by John DiMaggio) - A 491-centimeter (16.11 ft) Triceraton warrior who was condemned to the Tri-Arena for not wanting to help Emperor Zanmoran search for the fragments of the Heart of Darkness. Since his imprisonment, he has become a star gladiator; he is thus reminiscent of the 2003 series character Traximus. Zeno fought the Turtles in the arena after giving them advice about their first match, but was later convinced to help them escape due to their shared contempt for the Heart of Darkness/Black Hole Generator.
 * Lieutenant Zax (voiced by Clancy Brown) - A Triceraton who assisted Captain Mozar into reclaiming the two fragments of the Heart of Darkness from the Turtles and later obtaining the final fragment of the Heart of Darkness from the planet Magdomar.
 * Triceraton Soldiers (Various Voices) - The foot soldiers of the Triceraton Empire.