Turtle Temper
While spying on the Kraang, the Turtles are discovered and accosted by a New Yorker named Vic, w…
New Friend, Old Enemy
Shredder, now in New York, sends his enigmatic top pupil and several Foot Clan ninjas to attack…
I Think His Name Is Baxter Stockman
Splinter grounds his sons for skateboarding in the lair. However, the Turtles decide to sneak ou…
Metalhead
Donatello becomes frustrated in using his Bō-Staff against to fight the technologically-advanced…
Monkey Brains
Following a training exercise, Splinter advises Donatello to learn how to fight without thinking…
Never Say Xever
April takes the Turtles to Mr. Murakami's noodle shop, which is attacked by the Purple Dragons g…
The Gauntlet
April finds herself being stalked by a mutant pigeon named Pete, who reveals that he is carrying…
Panic in the Sewers
Splinter suffers a nightmare where the Turtles are killed by the Shredder, and forces them to tr…
Mousers Attack!
Friction grows between the Turtles when Leonardo and Raphael, particularly the latter, deem Dona…
It Came from the Depths
News footage of a monster in the sewers starts to circulate, and the Turtles decide to deal with…
I, Monster
Dr. Victor Falco continues to experiment with obtaining psychic powers, plotting revenge against…
New Girl in Town
Snakeweed returns and begins abducting people. Tired of Raphael's constant criticism while tryin…
The Alien Agenda
Leo and Raph fight over whether or not they can trust Karai. The Turtles get their first look at…
The Pulverizer
Donatello converts Leatherhead's subway car into a battle van, which Mikey names the Shellraiser…
TCRI
While breaking into the hostile environment of TCRI headquarters upon being told of its location…
Cockroach Terminator
Donatello creates a "spyroach" to spy on the Kraang in TCRI. They learn that the Kraang are plan…
Baxter's Gambit
Following a three-way fight between the Turtles, the Foot, and the Kraang, Stockman convinces Sh…
Enemy of My Enemy
When a Kraang invasion scheme threatens to destroy the Turtles and put the whole world in danger…
Karai's Vendetta
After the Turtles discover a Kraang plot to turn Earth's water into Kraang water, they infiltrat…
The Pulverizer Returns!
Whilst spying on Shredder's lackeys, the Turtles encounter the Pulverizer once more, who is work…
Parasitica
While investigating a destroyed Kraang hideout, the Turtles are attacked by a giant mutant wasp,…
Operation: Break Out
In an attempt to impress April, Donatello breaks into a secret Kraang detention center alone in…
Showdown
Alan Wan Michael Fong and Rie Koga Part 1: After learning that the Kraang are planning an invasi…
The Mutation Situation
The Turtles' mission to prevent the Kraang from delivering a shipment of mutagen to Shredder cau…
Follow the Leader
Leonardo and Raphael have fallen out after Raph says he's the leader again but when Leo gets kid…
Invasion of the Squirrelanoids
While searching for the missing mutagen, the Turtles encounter a squirrel forcing its way down t…
Mutagen Man Unleashed
Donnie becomes very jealous of a student April, who is still holding a grudge against him and hi…
Mikey Gets Shellacne
Mikey plays with some rejected retro-mutagen samples and contracts a dangerous acne infection th…
Target: April O'Neil
While walking on the street, April was visited by Donnie, much to her surprised despite everythi…
Slash and Destroy
After Raph's pet box turtle Spike drinks some mutagen, he mutates into a spiky, hulking box turt…
The Good, the Bad, and Casey Jones
Casey Jones establishes a new motive to protect New York from any future attacks from ninja and…
The Kraang Conspiracy
April feels left out and insists on joining the Turtles on a mission to a newly-rebuilt TCRI. Du…
Fungus Humungous
When the spawns of mutated sentient mushrooms spread through the sewers, their spores cause Apri…
Metalhead Rewired
After Donnie further upgrades and modifies Metalhead's artificial intelligence/multi-agent syste…
Of Rats and Men
When the Rat King returns, Splinter must overcome his fears of being controlled by Rat King in o…
Mazes & Mutants
The Turtles try to relax by playing a role-playing game called "Mazes & Mutants," but the game b…
The Lonely Mutation of Baxter Stockman
Donnie finally discovers a Retro-Mutagen that can restore Kirby to his human form as he, the oth…
Newtralized!
Tension arises between Raph and Casey due to Casey's inability to handle bigger mutant threats.…
Pizza Face
When living pizzas begin turning people into zombies, including Leo, Raph, Donnie, Splinter, and…
The Wrath of Tiger Claw
Tiger Claw returns and vows revenge on the Turtles and works with Karai on a ruse to locate thei…
The Legend of the Kuro Kabuto
Feeling ashamed of himself for losing Karai to Shredder like Splinter did, Leo talks the other T…
Plan 10
When Raphael accidentally switches minds with a Kraang after he accidentally pierces a part of a…
Vengeance Is Mine
Leo stages a rescue for Karai against Splinter's wishes. While the mission is a success, Karai's…
A Chinatown Ghost Story
The evil spirit of a powerful Shang dynasty martial artist named Ho Chan is released by the Purp…
Into Dimension X!
After receiving a message from an aged Leatherhead that the Kraang have perfected the mutagen, M…
The Invasion
Part 1: As a last resort at getting back at the Turtles and Splinter for Karai's mutation, Shred…
Within the Woods
Three months after being driven out of New York and narrowly escaping from Shredder and the Kraa…
A Foot Too Big
After Donatello once again tries to impress April (this time with a music box), he discovers and…
Buried Secrets
The Turtles discover a lost Kraang scout ship under the house and find April's lost mother. Howe…
The Croaking
After getting in trouble for trashing the house, Michelangelo gets upset and flees. After meetin…
In Dreams
When the Turtles are trapped in their dreams by a brotherhood of outer-dimensional beings called…
Race With the Demon!
Casey and Donatello must put aside their differences and work together to build a hot rod when a…
Eyes of the Chimera
When a mutant Chimera (created by mutagen combining a falcon, a fish that it caught, and a worm…
Vision Quest
When the Turtles go to train in the woods to make them all more one with nature, they are visite…
Return to New York
Upon returning home to New York City, the Turtles discover that the city has been overrun with K…
Serpent Hunt
As Splinter feels disheartened without Karai back in the family, the Turtles search for her, but…
The Pig and the Rhino
After Donnie finishes a new batch of retro-mutagen in hopes of returning Karai back to normal, t…
Battle for New York
Part 1: When the Turtles encounter a Kraang resistance team of mutants called "the Mighty Mutani…
Casey Jones vs. the Underworld
Livid for being left behind by the Turtles to save New York with the Mighty Mutanimals (from the…
The Noxious Avenger
When Garson Grunge, a humble garbage man who had encounters with several mutants during his care…
Clash of the Mutanimals
With his mind-control serum completed, Shredder uses it to infect Slash and Dr. Tyler Rockwell.…
Meet Mondo Gecko
While hanging out together, Michelangelo and Casey meet a skateboarding leopard gecko mutant "Mo…
The Deadly Venom
With Karai brainwashed by Shredder's mind-control serum she begins hunting and poisoning the Tur…
Turtles in Time
When the Turtles encounter a clumsy Time Master in Training named Renet, they must help her in r…
Tale of the Yokai
Now trapped sixteen years in Tokyo, Japan's not-too-distant past, after an accident with Renet's…
Attack of the Mega Shredder!
The Turtles attempt to steal one of the Shredder's Worms in order to make a cure for the Mind-Co…
The Creeping Doom
After Michelangelo fools around in his lab, an accident causes Donatello's Intelligence to drop…
The Fourfold Trap
After being kidnapped by the hypnotized Karai, the Turtles are placed in deadly traps that they…
Dinosaur Seen in Sewers!
Raphael meets and "befriends" a delusional Alien Dinosaur known as Zog, the Triceraton. However,…
Annihilation: Earth!
Part 1: After learning that the Earth is in danger of being invaded by both the Kraang in their…
Beyond the Known Universe
Following the destruction of Earth and Splinter's being killed by Shredder, the Turtles, April,…
The Moons of Thalos 3
Traveling inside their spacecraft, the Turtles, April, Casey, and the Fugitoid are shot down by…
The Weird World of Wyrm
While investigating a wrecked spacecraft, the Turtles, April, Casey, and the Fugitoid find a hyp…
The Outlaw Armaggon
When Lord Dregg hires a cyborg bounty hunter shark named Armaggon to destroy the Turtles, the te…
Riddle of the Ancient Aeons
The Turtles, the Fugitoid, April, and Casey must journey through an ancient alien temple to get…
The Cosmic Ocean
The Turtles journey through the cosmic ocean of Varuna in outer space, which is gravitationally…
Trans-Dimensional Turtles
The Turtles are transported to a parallel universe, where they meet their counterparts, and toge…
Revenge of the Triceratons
Donatello is feeling inferior to the Fugitoid, but his intellect is put to the test when the Tri…
The Evil of Dregg
When Raphael loses his fighting mojo after seemingly being betrayed by Mona Lisa on Sectoid 1, h…
The Ever-Burning Fire
The Turles must overcome impossible odds like the Triceratons and Lord Dregg in order to obtain…
Earth's Last Stand
As the team finally reaches Earth, the Fugitoid reveals a horrible secret about his past. He rev…
Broken Foot
When Leonardo secretly allies himself with Karai who now has Foot Soldiers of her own he gets hi…
The Insecta Trifecta
Raphael must overcome his fear of insects to help the team when they are forced to battle Baxter…
Mutant Gangland
With the Shredder missing from the city, Don Vizioso desires to take over by having his gangster…
Bat in the Belfry
Donnie experiments with April's crystalline fragment of the mystical Sol Star, but accidentally…
The Super Shredder
For the first time, the Turtles encounter something they cannot defeat - the Super Shredder! Now…
Darkest Plight
The Turtles (along with April, Casey, and Karai) desperately hunt for Splinter, as Super Shredde…
The Power Inside Her
Despite Leonardo's uncertainty, Donatello decides to do tests on April, but only ends up in furt…
Tokka vs. the World
Tokka, who is shown to have survived the colossal implosion of the dwarf star in "The Ever-Burni…
Tale of Tiger Claw
A dangerous female assassin and fox\-mutant, by the name of Alopex, appears who is bent on takin…
Requiem
The Mutagenic serum that Super Shredder was transformed by had been stabilized at last. Super Sh…
Owari
After Splinter is buried on the O'Neil farm, his spirit informs Leonardo that Super Shredder is…
Scroll of the Demodragon
Despite the Turtles victory against the Shredder, the Foot Clan has been reborn as an undergroun…
The Forgotten Swordsman
When Karai became the rightful heiress of the Foot Clan, her old teacher, Hattori Tatsu, seeks r…
Heart of Evil
Donatello's grudge with Don Vizioso threatens the Turtles' newest mission: To retrieve the heart…
End Times
Kavaxas reveals his treachery, freeing himself from the Seal of the Ancients and releasing an ar…
Lone Rat and Cubs
When Splinter is mutated into a sewer rat, he must learn to survive the life of a mutant on the…
The Curse of Savanti Romero
The Turtles' plans to enjoy Halloween are put on hold when strange monsters threaten to transfor…
The Crypt of Dracula
Renet transports the Ninja Turtles to Transylvania to stop Savanti Romero from recruiting Count…
The Frankenstein Experiment
Savanti recruits Frankenstein's Monster and will soon unleash his creatures on the 21st century.
Monsters Among Us
When Renet and the Turtles return to a world run by monsters, they realize they have made the si…
When Worlds Collide
The Newtralizer returns to New York City, more powerful than ever before, and joins forces with…
Yojimbo
The Ninja Turtles are transported to an alternate dimension, where they befriend the Samurai Rab…
Osoroshi no Tabi
Usagi leads the Turtles through a haunted forest, where they end up encountering mischievous and…
Kagayake! Kintaro
As they reach their destination, Usagi and the Turtles must help young Kintaro fulfill his desti…
The Wasteland Warrior
In an alternate timeline. Set in a post-apocalyptic future, all humans and most of the mutant po…
The Impossible Desert
Raphael, Donatello and Mira continue to be trapped by constant sandstorms throughout the desert,…
Carmageddon!
Still trapped in "the Pit", Raphael manages to defeat his two opponents and is hailed as leader…