Teenage Mutant Ninja Turtles (2012 TV series) (season 3)

Teenage Mutant Ninja Turtles (season 3)
Country of origin United States
No. of episodes 26
Original network Nickelodeon
Original release October 3, 2014 (2014-10-03) – September 27, 2015 (2015-09-27)
Season chronology

The third season of Teenage Mutant Ninja Turtles began airing on Nickelodeon on October 3, 2014. On February 26, 2013, Nickelodeon ordered a third season of Teenage Mutant Ninja Turtles.[1]

The third season tells the story of the Turtles who are required to abandon their lair in the New York City sewers to Northampton, Massachusetts.


Jason Biggs departed the role of Leonardo after the 19th episode of season 2 and was temporarily replaced by Dominic Catrambone.[2] Seth Green assumed the role beginning in season 3; in the show's universe, the change of voice was explained due to Leonardo having wounded his vocal cords.[3] At San Diego Comic-Con International 2014, new characters such as the Dream Beavers and Napoleon Bonafrog would be making appearances. Actor Robbie Rist, who previously voiced Michelangelo in the first three films, voiced Mondo Gecko in the season.[4] Renae Jacobs, who voiced April O'Neil in the 1987 television series, guest-starred as Mrs. O'Neil and an alien.[5] Napoleon Dynamite star Jon Heder guests stars as Napoleon Bonafrog


The season debuted on Nickelodeon in Australia on February 7, 2015.[6]


No. in
TitleDirected byWritten byOriginal air date[7]Prod.
U.S. viewers
531"Within the Woods"Sebastian MontesBrandon AumanOctober 3, 20143011.42[8]

Three months after being driven out of New York and narrowly escaping from Shredder and the Kraang, the gang take shelter at April's family farmhouse in Northampton, Massachusetts to recover and figure out how to stop the Kraang. The Turtles also deal with not having Splinter around, the possibility of Leo not making a full recovery, and a mysterious creature that is stalking the group.

Note: Starting with this episode, Leonardo is voiced by Seth Green. This change in voice actor is explained in-universe as the result of damage to Leo's voicebox.
542"A Foot Too Big"Michael ChangDoug LangdaleOctober 10, 20143021.31[9]
After Donatello once again tries to impress April (this time with a music box), he discovers and befriends Bigfoot, who is being hunted by a collector named The Finger. Donatello then convinces the others to help protect it. However, Bigfoot (who is a girl) grows to have a crush on Donatello and tries to win him over. Donatello realizes that Bigfoot liking him has the same effect as him liking April.
553"Buried Secrets"Alan WanMark HenryOctober 17, 20143031.67[10]
The Turtles discover a lost Kraang scout ship under the house and find April's lost mother. However, Mikey has suspicions that April's mother may not be who she appears to be, and even though no one believes him, they soon learn that Mrs. O'Neil is actually a Kraang creature posing as her.
564"The Croaking"Michael ChangKevin Burke & Chris "Doc" WyattNovember 7, 20143041.47[11]

After getting in trouble for trashing the house, Michelangelo gets upset and flees. After meeting a member of the Punk Frogs named Napoleon Bonafrog, he unknowingly joins them in a plan to capture the humans and take over the nearby city.

Napoleon Dynamite star Jon Heder guest stars
575"In Dreams"Sebastian MontesDoug LangdaleNovember 14, 20143051.35[12]
When the Turtles are trapped in their dreams by a brotherhood of outer-dimensional beings called the Dream Beavers, April and Casey must figure out how to wake them up before their life force is drained out of them.
586"Race with the Demon!"Alan WanGavin HignightNovember 21, 20143061.74[13]
Casey and Donatello must put aside their differences and work together to build a hot rod when a mutant car called Speed Demon endangers them and their friends.
597"Eyes of the Chimera"Michael ChangGreg WeismanJanuary 11, 20153071.85[14]
When a mutant Chimera (created by mutagen combining a falcon, a fish that it caught, and a worm that was in the fish's mouth) is created by Speed Demon's mutagen (from the previous episode), it kidnaps Casey, Raph, Mikey and Donnie, leaving April and Leo to stop it while overcoming their own disabilities; made even more difficult when April becomes only able to see through the Chimera's eyes.
608"Vision Quest"Sebastian MontesTodd CaseyJanuary 18, 20153082.31[15]
When the Turtles go to train in the woods to make them all more one with nature, they are visited by a spiritual manifestation of Splinter, who informs them that they must overcome their weaknesses by facing off against their enemies in a vision quest to prepare themselves for their return to New York.
619"Return to New York"Alan WanBrandon AumanJanuary 25, 20153091.85[16]
Upon returning home to New York City, the Turtles discover that the city has been overrun with Kraang Droids and Foot Bots. As they travel through the Kraang filled city, they find out that Splinter is suffering amnesia due to the injuries he got from his battle with Shredder. Splinter is then captured by the Foot Clan and held hostage by Stockman-Fly and three Shredder Mutants created from the DNA of Shredder and some crustaceans.
6210"Serpent Hunt"Michael ChangRandolph HeardFebruary 1, 20153101.57[17]
As Splinter feels left out without Karai back in the family, the Turtles search for her, but are confronted by Zeck and Steranko, who are also looking for Karai to exchange to Shredder for protection from the Kraang populace.
6311"The Pig and the Rhino"Alan WanBrandon AumanMarch 8, 20153111.81[18]
After Donnie finishes a new batch of retro-mutagen in hopes of returning Karai back to normal, the Turtles set out with April and Casey to search for her again. They find themselves are hunted by Zeck and Steranko (who were mutated by Shredder into the warthog and white rhinoceros mutants "Bebop and Rocksteady" at the end of the last episode) where they are sent to find Karai again as well.
6412"Battle for New York" (Part 1)Michael ChangBrandon AumanMarch 15, 20153121.78[19]
When the Turtles encounter a Kraang resistance team of mutants called "the Mighty Mutanimals" (consisting of Slash, Leatherhead, Dr. Tyler Rockwell's monkey form, and Pigeon Pete and backed by Jack J. Kurtzman), Leo and Slash butt heads over how to carry out a mission when Kraang Sub-Prime leads the Kraang in a plot to mutate the entire Earth with a giant mutagen-filled missile.
6513"Battle for New York" (Part 2)Sebastian MontesMark HenryMarch 15, 20153131.78[19]
Working together alongside the Mighty Mutanimals, the Turtles must brave the bizarre world of Dimension X to save the enslaved people of New York while fighting Kraang Sub-Prime and Mrs. Campbell.
6614"Casey Jones vs the Underworld"Sebastian MontesAndrew RobinsonMarch 22, 20153141.85[20]
Livid for being left behind by the Turtles to save New York with the Mighty Mutanimals (from the previous episode), Casey tries to prove that he can take on the criminal underworld on his own. However, he discovers that he is in over his head, when the Shredder gets Manhattan's criminal underworld on the Foot Clan's side. Casey also goes head to head with the Purple Dragon's new and official leader Hun as the Foot Clan plans to use a factory in the Purple Dragon's territory to further the Foot Clan's latest plot.
6715"The Noxious Avenger"Alan WanTodd CaseyApril 26, 2015 (2015-04-26)3151.74[21]
When Garson Grunge, a humble garbage man who had encounters with several mutants during his career as a sewer worker, is accidentally mutated into the garbage mutant "Muckman" during a face-off between the Turtles and Bebop and Rocksteady, he gains notoriety as New York City's "Monster Hero" after he saves a man from the Purple Dragons. However, Muckman blames the Turtles for his mutation. The Turtles' situation is complicated further not only when Splinter grounds them for getting caught by a news crew that was following Muckman, but also when Bebop and Rocksteady trick Muckman into helping them finding an ingredient for a mind-control serum.
6816"Clash of the Mutanimals"Michael ChangHenry GilroyMay 3, 2015 (2015-05-03)3161.57[22]
With his mind-control serum completed, Shredder kidnaps Slash, Dr. Tyler Rockwell's mutant form, and Raph and uses them as his hypnotized slaves to kill both the Turtles and the Mutanimals.
6917"Meet Mondo Gecko"Sebastian MontesKevin Burke & Chris "Doc" WyattMay 10, 2015 (2015-05-10)3171.80[23]
While hanging out together, Michelangelo and Casey meet a skateboarding leopard gecko mutant "Mondo Gecko". While Mikey makes quick friends with the mutant, Casey is suspicious of Mondo's true intentions as he is an errand person for Mr. X (an alias of Fishface).
7018"The Deadly Venom"Alan WanEugene SonMay 17, 2015 (2015-05-17)3181.70[24]
With Karai brainwashed by Shredder's mind-control serum she begins hunting and poisoning the Turtles as well as April and Casey. Splinter teaches Leonardo a special mantra that can help fight the poison of serpent Karai.
7119"Turtles in Time"Michael ChangRandolph HeardAugust 2, 2015 (2015-08-02)3191.65[25]
When the Turtles encounter a "Time Master in Training" named Renet, they must help her in retrieving her Reality-Altering Scepter from an evil Mutant Time Master known as Savanti Romero, in Medieval England.
7220"Tale of the Yokai"Sebastian MontesBrandon AumanAugust 9, 2015 (2015-08-09)3201.37[26]
Now trapped 16 Years in Heisei Japan's past after an accident with Renet's Scepter, the Turtles encounter Hamato Yoshi and Oroku Saki, in the middle of their rivalry over Tang Shen's heart, and Miwa/Karai's future.
7321"Attack of the Mega Shredder!"Alan WanGavin HignightAugust 16, 2015 (2015-08-16)3211.78[27]
The Turtles attempt to steal one of the Shredder's Worms in order to make a cure for the Mind-Control Serum, only for them to face Shredder's biggest Mutant yet.
7422"The Creeping Doom"Michael ChangPeter Di CiccoAugust 23, 2015 (2015-08-23)3221.77[28]
After Michelangelo fools around in his lab, an accident causes Donatello's Intelligence to drop rapidly, as well as revive both the Creep, and Snakeweed.
7523"The Fourfold Trap"Sebastian MontesMark HenrySeptember 13, 2015 (2015-09-13)3231.60[29]
After being kidnapped by the hypnotized Karai, the Turtles are placed in deadly traps that they must work together in in order to escape. Splinter, in his efforts to save the turtles, is forced to face Karai in order to free her from Shredder's control.
7624"Dinosaur Seen in Sewers!"Michael ChangTodd CaseySeptember 20, 2015 (2015-09-20)3241.82[30]
Raphael meets and "befriends" a delusional Alien Dinosaur known as Zog, the Triceraton. However, after it attacks the Mutanimals, and is reputable for being feared by the Kraang, is there more to the savage Alien Dinosaur than meets the eye?
7725"Annihilation: Earth!" (Part 1)Sebastian MontesBrandon AumanSeptember 27, 2015 (2015-09-27)3251.43[31]
After learning that the Earth is in danger of being invaded by both the Kraang in their repaired Technodrome and the Triceraton Empire, the Turtles, April, Casey, Leatherhead, and a Kraang rebel known as "Bishop" must work together to take out the Technodrome before the triceratons arrive and wipe out the Earth.
7826"Annihilation: Earth!" (Part 2)Alan WanBrandon AumanSeptember 27, 2015 (2015-09-27)3261.43[31]
Even after recruiting the Mutanimals and some old friends to help them, with Michelangelo kidnapped, and time running out for the Earth, the Turtles must stage a rescue for their brother from the Triceraton Empire. Meanwhile, Splinter and the Shredder are forced to form an uneasy alliance to stop the Triceratons from activating a Black Hole that will destroy the Earth.


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