View source for Teenage Mutant Ninja Turtles (Season 4)

{{Infobox TV season
|show_name=Teenage Mutant Ninja Turtles (2012 TV series)
|season=4
|image=TmntS4.jpg
|first_aired=[[October 25]], [[2015]]
|last_aired=[[February 26]], [[2017]]
|episodes=26
|dvd_release_date=
|prev_season=Teenage Mutant Ninja Turtles (Season 3)
|next_season=Teenage Mutant Ninja Turtles (Season 5)
}}{{TMNT season navigation}}
The following is a list of episodes in the '''fourth season''' of ''[[Teenage Mutant Ninja Turtles (2012 TV series)|Teenage Mutant Ninja Turtles]]'', listed in production order.

==Episodes==
{| class="wikitable" style="text-align:center"
|-
! Image !! # !! Title !! Original air date<br>{{s|(United States)}} !! Prod.<br />code
{{EpList
|Number=79
|Title={{i|turtlepedia|Beyond the Known Universe}}
|Date={{Start date|2015|10|25}}
|ProdCode=401
|Desc= Following the destruction of Earth and Splinter's being killed by Shredder, the Turtles, April, and Casey travel back in time with a cyborg extraterrestrial scientist known as the [[Fugitoid]] to six months earlier to stop the Triceratons from collecting all the parts to the black hole generator and destroy Earth. They are pursued by the villainous ruler of the planet Sectoid, [[Lord Dregg|Lord Vringath Dregg]], after crossing paths with him while stopping at a spaceport for repairs.
}}
{{EpList
|Number=80
|Title={{i|turtlepedia|The Moons of Thalos 3}}
|Date={{Start date|2015|11|01}}
|ProdCode=402
|Desc= Traveling inside their spacecraft, the Turtles, April, Casey, and the Fugitoid are shot down by the Triceratons and are stranded on an icy moon. As they try to escape, they come across two of the Newtralizer's people, the Salamandarians, one of which Raphael develops a crush on and nicknames "[[Mona Lisa]]".
}}
{{EpList
|Number=81
|Title={{i|turtlepedia|The Weird World of Wyrm}}
|Date={{Start date|2015|11|08}}
|ProdCode=403
|Desc= While investigating a wrecked spacecraft, the Turtles, April, Casey, and the Fugitoid find a hypercube containing the creature [[Wyrm]], who grants them three wishes.
}}
{{EpList
|Number=82
|Title={{i|turtlepedia|The Outlaw Armaggon!}}
|Date={{Start date|2015|11|15}}
|ProdCode=404
|Desc= When Lord Dregg hires a cyborg bounty hunter shark named [[Armaggon]] to destroy the Turtles, the team flees to an abandoned space station. However, they soon face another threat in the form of the station's autonomous artificial intelligence system, Overmind.
}}
{{EpList
|Number=83
|Title={{i|turtlepedia|Riddle of the Ancient Aeons}}
|Date={{Start date|2016|01|10}}
|ProdCode=405
|Desc= The Turtles, the Fugitoid, April, and Casey must journey through an ancient alien temple to get a fragment of the black hole generator before the Triceratons do.
}}
{{EpList
|Number=84
|Title={{i|turtlepedia|Journey to the Center of Mikey's Mind}}
|Date={{Start date|2016|01|17}}
|ProdCode=406
|Desc= When microscopic aliens invade Mikey's mind, the Turtles have to chase them through the strange world of Mikey's subconscious, with the help of April's inherent psionic/extrasensory abilities.
}}
{{EpList
|Number=85
|Title={{i|turtlepedia|The Arena of Carnage}}
|Date={{Start date|2016|01|24}}
|ProdCode=407
|Desc= The Turtles are captured and thrown into the Triceratons' battle arena. Their only chance of escaping is teaming up with a convicted traitor while April and Casey work with the Fugitoid to free them.
}}
{{EpList
|Number=86
|Title={{i|turtlepedia|The War for Dimension X}}
|Date={{Start date|2016|01|31}}
|ProdCode=408
|Desc= The Turtles must gain the trust of the Utrom Council (Queen, Rook, Bishop, and Pawn) in order to find the next piece of the black hole generator, where they learn the Utroms past, as well as the Kraang's.
}}
{{EpList
|Number=87
|Title={{i|turtlepedia|The Cosmic Ocean}}
|Date={{Start date|2016|03|13}}
|ProdCode=409
|Desc= The Turtles journey through the cosmic ocean of Varuna in outer space, which is gravitationally bound together, where they must prove themselves worthy to Hiidalra, an aquatic alien queen who holds the second piece of the black hole generator.
}}
{{EpList
|Image=Trans-Dimensional Turtles promo artwork.png
|Number=88
|Title=[[Trans-Dimensional Turtles]]
|Date={{Start date|2016|03|27}}
|ProdCode=410
|Desc= The Turtles are transported to a parallel universe, where they meet [[wikipedia:Teenage Mutant Ninja Turtles (1987 TV series)|their counterparts]], and together they battle [[Krang]] and Kraang Subprime.
'''Note:''' This episode had an early screening at WonderCon on March 26, 2016, one day before its Nickelodeon broadcast date.
}}
{{EpList
|Number=89
|Title={{i|turtlepedia|Revenge of the Triceratons}}
|Date={{Start date|2016|04|03}}
|ProdCode=411
|Desc= Donatello is feeling inferior to the Fugitoid, but his intellect is put to the test when the Triceratons attack.
}}
{{EpList
|Number=90
|Title={{i|turtlepedia|The Evil of Dregg}}
|Date={{Start date|2016|04|10}}
|ProdCode=412
|Desc= When Raphael loses his fighting mojo after seemingly being betrayed by Mona Lisa on Sectoid 1, he must overcome his feelings to save his brothers from certain doom at the hands of Lord Dregg and Armaggon.
}}
{{EpList
|Number=91
|Title={{i|turtlepedia|The Ever-Burning Fire}}
|Date={{Start date|2016|04|17}}
|ProdCode=413
|Desc= The Turles must overcome impossible odds like the Triceratons and Lord Dregg in order to obtain the final Black Hole Generator piece that is located on the lava planet of Magdomar, guarded by the cosmic alligator snapping turtle-like beast [[Tokka and Rahzar|Tokka]]. In the end, they lose all three pieces and Mozar calls them at the end saying they are going to use the black hole generator on Earth.
}}
{{EpList
|Number=92
| EpisodeNumber2=14
|Title={{i|turtlepedia|Earth's Last Stand}}
|Date={{Start date|2016|04|24}}
|ProdCode=414
|Desc= As the team finally reaches Earth, the Fugitoid reveals a horrible secret about his past. He reveals that he was the creator of the Heart of Darkness. At the end of the episode, the turtles warn Splinter about Shredder's betrayal, while Fugitoid flies himself and his spacecraft into the Triceraton mothership along with the Heart of Darkness to destroy it; taking the Triceratons and himself down with it. The Turtles, April and Casey mourn his ultimate sacrifice for their world. However, at the end of the episode, his head reactivates in the Triceraton rubble.
}}
{{EpList
|Number=93
|Title=[[w:c:turtlepedia:City at War (2012 episode)|City at War]]
|Date={{Start date|2016|08|14}}
|ProdCode=415
|Desc= Weeks after the Triceratons were stopped, the Turtles now celebrates April's full transition as a [[kunoichi]]. They find out Karai has returned and she vowed to restore the Foot Clan and undo the damage the Shredder has done to the Clan with the help of her old friend from Japan, Shinigami. It is revealed that Shredder is alive but gravely injured from the previous episode who now uses mutagen provided by Stockman to speed up his recovery and to further increase his strength.

'''Note:''' This episode had an early sneak peek at Comic Con 2016.
}}
{{EpList
|Number=94
|Title={{i|turtlepedia|Broken Foot}}
|Date={{Start date|2016|08|21}}
|ProdCode=416
|Desc= When Leonardo secretly allies himself with Karai who now has Foot Soldiers of her own he gets himself into deeper danger than he could have realized, such as Donatello getting injured from explosives and the Turtles and Karai close to death in the Foot Soldier Factory. In the end Karai no longer wants to go after Shredder's belongings but she wants to go after Shredder himself.
}}
{{EpList
|Number=95
|Title={{i|turtlepedia|The Insecta Trifecta}}
|Date={{Start date|2016|08|28}}
|ProdCode=417
|Desc=Raphael must overcome his fear of insects to help the team when they are forced to battle Stockman-Fly's new insect minions Scumbug and Antrax, who have captured Casey Jones at the time when Shredder was recuperating.
}}
{{EpList
|Number=96
|Title={{i|turtlepedia|Mutant Gangland}}
|Date={{Start date|2016|09|04}}
|ProdCode=418
|Desc= With the Shredder missing from the city, Don Vizioso desires to take over by having his gangster engineer highly advanced anti-mutant weapons that have been designed to incapacitate the Turtles and their fellow mutants. When Mondo Gecko and Donnie are abducted, it is up to Leo, Mikey, Raph, Slash, Leatherhead, and Dr. Rockwell to save them from being taken apart for the amusement of Don Vizioso. However, they must also deal with Don's strongest and most lethal of minions: Hammer. 
}}
{{EpList
|Number=97
|Title={{i|turtlepedia|Bat in the Belfry}}
|Date= {{Start date|2016|09|11}}
|ProdCode=419
|Desc= Donnie experiments with April's crystalline fragment of the mystical Sol Star (which she is becoming quite obsessed with, due to its mighty power further developing and rapidly advancing her innate psychic/extrasensory abilities to tremendously dangerous power-levels), but accidentally supercharges it with electricity that stirs sudden sentience and autonomy in the crystal fragment. It then uses this to bring four of the main characters from Mikey's favorite comic book to life. 

Mikey easily befriends the heroes Wingnut and Screwloose, and he and Casey join them in stopping crime. But when they tell the two superheroes about the fact that they're fictional characters, and show them the mystical Sol Star, it causes Wingnut and Screwloose to transform into insane monstrous forms. Meanwhile, Donatello becomes incessantly worried that the Sol Star fragment is gradually affecting April's mental stability.
}}
{{EpList
|Number= 98
|Title=[[w:c:turtlepedia:The Super Shredder (2012 episode)|The Super Shredder]]
|Date={{Start date|2016|11|06}}
|ProdCode= 420
|Desc=For the first time, the Turtles encounter something they cannot defeat - the Super Shredder! Now far stronger and more vicious than ever, Shredder has returned to put an end to Splinter and the Turtles once and for all. He captures Karai and challenges Splinter to another duel to the death. Meanwhile, the Turtles and April have to deal with Tiger Claw, Rahzar, and Fishface. 

In the Undercity, the duel between Splinter and Super Shredder begins to heat up; particularly when Shredder's right arm begins to go out of control as a dangerous side effect of the highly unstable mutagen dosages Stockman-Fly had warned him of. The Turtles, April and Karai show up to assist Splinter, but are held up Chrome Domes. As Super Shredder prepares for the final blow, Splinter throws a knife at some smoke bombs, which causes the ledge to crumble and collapse, resulting in the longtime rivals to fall 1,000 feet into the abyss below; presumably to their deaths.  

'''Note:''' This episode had an early showing at New York Comic Con 2016.
}}
{{EpList
|Number=99
|Title={{i|turtlepedia|Darkest Plight}}
|Date={{Start date|2016|11|13}}
|ProdCode=421
|Desc= The Turtles (along with [[April O'Neil|April]], [[Casey Jones (Teenage Mutant Ninja Turtles)|Casey]], and [[Karai]]) desperately hunt for Splinter, as Super Shredder is seen to have survived and has Bebop and Rocksteady make sure that Splinter is truly destroyed. Donnie, Mikey, Raph and Casey go to search the Undercity for Splinter with their grappling hooks; unaware that Bebop and Rocksteady are not far. Meanwhile Leo, Karai and April lure Tiger Claw and Super Shredder to the surface. Leo is separated from the two girls and left to battle Super Shredder all on his own. Fortunately, April uses her extraordinarily powerful telekinetic abilities against Super Shredder and succeeds in saving Karai from being crushed by a truck that contains sulfuric acid (thanks to the mystical Sol Star fragment further amplifying her psionic abilities), her eyes glow a bright blue and she smiles malevolently as she hurls it right back at Super Shredder. 
In the depths of the Under-City, a gravely injured and weakened Splinter is shocked to find the Rat King, who wants him back under his control. But is revealed to have been nothing more than hallucinations due to his fever. He is then rescued by a joyous Donnie and Mikey. At his new lair, Super Shredder demands more mutagen, which Tiger Claw adamantly refuses to allow, as it will destroy his entire being. However, he forces Stockman-Fly to inject the remaining dosages of the unstable mutagen into his system as Tiger Claw watches in terror and fear.
}}
{{EpList
|Number=100
|Title={{i|turtlepedia|The Power Inside Her}}
|Date={{Start date|2016|11|20}}
|ProdCode=422
|Desc= Despite Leonardo's uncertainty, Donatello decides to do tests on April, but only ends up in further increasing her psionic abilities and being possessed by the corrupted spirit of an almighty elder Aeon from within the Sol Star fragment, by the name of Za-Naron. In the end, April succeeds in regaining control, putting an end to Za-Naron and breaking the Sol Star fragment. She apologizes for not listening to what they had warned her about the influence the crystal fragment had on her; particularly Donnie. She assures everyone that even though she can no longer harness the great mystical power of the Aeons, she now has a better understanding of how to control her increasingly powerful psionic abilities.
}}
{{EpList
|Number=101
|Title={{i|turtlepedia|Tokka vs. the World}}
|Date= {{Start date|2017|02|05}}
|ProdCode=423
|Desc= Tokka, who is shown to have survived the colossal implosion of the dwarf star in "The Ever-Burning Fire", returns and discovers that her baby boy (whom Raphael adopted as Chompy Picasso) is missing. Determined to get him back, she crash lands on Earth; leading up to an intense battle between her, the Earth Protection Force, and the Turtles who meet up with Bishop, who aids E.P.F. in advancing Earth's defenses against more extraterrestrial invasions. Raph manages to approach Tokka and explains that he only took her baby because he believed that she had perished, leaving Chompy motherless. Touched by this, Tokka leaves Chompy in Raph's care and returns to Magdomar. Splinter wonders what Raph will do once Chompy becomes full grown, to which Raph replies that he knows that Chompy is fated to return to the stars one day but will always look out for him until that day comes.
}}
{{EpList
|Number=102
|Title={{i|turtlepedia|Tale of Tiger Claw}}
|Date={{Start date|2017|02|12}}
|ProdCode=424
|Desc= A dangerous female assassin and fox-mutant, by the name of Alopex, with super speed, appears who is bent on taking down her own brother, Tiger Claw, with the cursed Blades of Vengeance. The Turtles, April and Casey try to befriend her, but she turns on them and furiously goes after Tiger Claw alone, but not before she curses Casey with the blades. Unfortunately, for her, Tiger Claw has well prepared for her arrival. The Turtles make the scene and distract Tiger Claw while April uses her tanto to break the M.O.U.S.E.R. cage that traps her. In gratitude, Alopex returns one of the blades to Casey, and April uses her telekinetic abilities to borrow Tiger Claw's ice gun so Casey can destroy them, thus breaking their curse. Alopex pins Tiger Claw and seems prepared to kill him again but decides against it as it is not honorable. Tiger Claw shoots her from behind, but Alopex anticipates this and dodges the blast   and slices off his right arm; an act that shocks even the Turtles. As Bebop and Rocksteady take the mutilated Tiger Claw away, Alopex takes off to the city rooftops again.
}}
{{EpList
|Number=103
|Title={{i|turtlepedia|Requiem}}
|Date= {{Start date|2017|2|19}}
|ProdCode=425
|Desc=When the Mutagen serum that Super Shredder used to mutate himself had been stabilized, Super Shredder is rid of his weaknesses and he is ready to hunt down Splinter and the Turtles and finish the fierce battle between him and his enemies and he finishes off Splinter by stabbing him and throwing him off the rooftop of the Wolf Hotel where the Turtles first fought Shredder. Enraged, April unleashes an exceptionally strong wave of white psychic energy to throw Super Shredder off the roof and into a garbage truck and Casey seemingly kills him by turning on the crusher. The grieving Turtles then carry Splinter's body to the Shellraiser and depart to lay him to rest. Super Shredder's hand bursts through the top of the truck, still very much alive.
}}
{{EpList
|Number=104
|Title= Owari
|Date= {{start date|2017|2|26}}
|ProdCode=426
|Desc= After Splinter is buried on the O'Neil farm, his spirit informs Leonardo that Super Shredder is still alive and needs to be stopped. The Turtles, April, and Casey ambush Shredder's hideout after finding out the location from the injured Karai. They defeat Super Shredder's henchmen (even turning Baxter Stockman back to normal in the process) before confronting Saki on the roof of the hideout. After Super Shredder knocks almost everyone off the building, Leonardo finally defeats the Shredder and finishes him off. The Turtles return to New York victorious as they prepare for the next imminent threat.
}}
|}
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