History ComicBook / TeenageMutantNinjaTurtlesIDW

In January 2024, it was [[https://www.cbr.com/exclusive-teenage-mutant-ninja-turtles-150-covers/ confirmed]] that [[MilestoneCelebration issue 150]] would be the end of the main series, and IDW would continue publishing Turtles comics set in this universe afterwards.

** With ''Series/TheLoneGunmen'' in a single issue of ''The X-Files: Conspiracy'' miniseries.
** With ''ComicBook/GhostbustersIDWComics'' in two ''Teenage Mutant Ninja Turtles/Ghostbusters'' miniseries, which are canon to both series.

** With the ''Franchise/StreetFighter'' series in ''Teenage Mutant Ninja Turtles vs. Street Fighter''.

** Several characters from the Archie comic are given new origins as well: Null goes from a demon (or possibly human turned demon) to an alien from Dimension X (with a GenderFlip to boot). Likewise, her cousin is Noi Tai Dar who was originally a Japanese oni.

* CloningAngst: Since Harold cut ties with them, Donatello decides he needs to up his mechanical knowledge to make up for the lost brainpower, so he starts rebuilding the robot that his consciousness was placed inside of previously. It turns out the data of his consciousness was copied and kept in the robot even when his mind and soul were returned to his own body. The copied Donatello struggles with the fact that he isn't the real Donatello and his robot brain is unable to resolve the existential terror of his situation, so he chooses to delete all his "human" elements so that only his raw intellect remains before he escapes.

* CloningBlues: Since Harold cut ties with them, Donatello decides he needs to up his mechanical knowledge to make up for the lost brainpower, so he starts rebuilding the robot that his consciousness was placed inside of previously. It turns out the data of his consciousness was copied and kept in the robot even when his mind and soul were returned to his own body. The copied Donatello struggles with the fact that he isn't the real Donatello and his robot brain is unable to resolve the existential terror of his situation, so he chooses to delete all his "human" elements so that only his raw intellect remains before he escapes.

** Pre-Mutation [[PapaWolf Splinter]] claws the face of a retreating Foot Ninja leaving [[Film/TeenageMutantNinjaTurtles familiar scars around his eye]].

* EarlyPersonalitySigns: The turtles pre-mutation were introduced with [[TheLeader Leonardo]] sitting still and quiet, [[TheSmartGuy Donatello curiously observing a bug]], [[BigEater Michelangelo]] gorging on lettuce and [[TheAloner Raphael]] on the far side of the enclosure by himself.

* EarlyPersonalitySigns: The turtles pre-mutation were introduced with [[TheLeader Leonardo]] sitting still and quiet, [[TheSmartGuy Donatello curiously observing a bug, [[BigEater Michelangelo]] gorging on lettuce and [[TheAloner Raphael]] on the far side of the enclosure by himself.

* AdaptationDyeJob: Splinter -- perhaps taking a nod from the [[WesternAnimation/TeenageMutantNinjaTurtles2003 second cartoon]] -- now has gray fur. Except in the ''Infestation'' tie-in miniseries, where he's portayed with his more traditional brown fur, but since this happened early in the series' run, this is probably just a mistake.
* AdaptationSpeciesChange:
** The Triceratons, while still humanoid dinosaurs, are now genetically-enhanced Earthly Triceratops rather than an alien species.
** Agent Bishop can be considered another example. In the 2003 cartoon, he was an enhanced human who survived for a long time through a series of clone bodies. Here, while he may have been a man before, he possesses a robot body under his human looking exterior instead. [[spoiler: It's eventually revealed that he is human, albeit severely deformed since birth, piloting a robot that looks human]].
** Several characters from the Archie comic are given new origins as well: Null goes from a demon (or possibly human turned demon) to an alien from Dimension X (with a GenderFlip to boot). Likewise, her cousin is Noi Tai Dar who was originally a Japanese oni.

* AgeLift: Princess Tribble, a baby in the '87 cartoon, is now the turtles' age. (Well, their biological age, anyway.)

* ArcWords: For the City Fall storyline: ''"This is no place for you."''

* TheGlomp: A particularly noteworthy one in Issue 66, when [[spoiler: Alopex joyously hugs Raphael after freeing herself from Kitsune's mind control]]. Raph also unleashes a massive glomp on Donatello in Issue 50, when [[spoiler: a robotified Donatello had seemingly blown himself up, only to return as a flesh-and-blood Turtle again.)]]

* MeaningfulEcho: When Shredder tosses Leo off a building in their first encounter he says ''"I am... disappointed."'' Then when The turtles have their first small victory over Shredder Leo echoes, ''"I am... disappointed."''

* MoreDakka: New character Herman the Hermit Crab specializes on this, thanks to the arsenal he carries on the dumpster that he uses as a "shell."

* SeenItAll: "In a world full of megalomaniacal interdimensional aliens, reincarnated ninja warriors, not to mention ''other'' assorted monsters and mutated freaks, believing in immortal demigods is no stretch of the imagination by ''any'' means."

* TakeThat: One of the antagonists introduced in the series in the Battle Nexus is Councilor Nieli, someone who derives personal enjoyment from watching people mercilessly battle. "Nieli" is the last name of the showrunner of the [[WesternAnimation/TeenageMutantNinjaTurtles2012 2012 series]].

** With ''VideoGame/StreetFighter'' in ''Teenage Mutant Ninja Turtles vs. Street Fighter''.

** While Karai's morals and relationship to the turtles have differed between iterations, she is usually portrayed as an AntiHero who tries implementing honorable traits into the Foot Clan whenever the Shredder isn't around, or at least [[EvenEvilHasStandards is unwilling to go to the same obscene lengths as her jonin would]]. This version of Karai ''[[{{Patricide}} murdered her own father]]'' because she wasn't as much of a cold-blooded killer as The Shredder and will often sabotage the Shredder's more moderate plans when she isn't trying to earn his approval.

** [[spoiler:Leatherhead]] who at first seems like a good-natured if slightly self centered individual but [[spoiler:murders several Utroms in stasis before nearly killing Fugitoid and tries to kill the turtles when found out,]] as opposed to the [[UnstoppableRage usually]] calm scientist he was in the 4Kids version, or the ReluctantPsycho who still fights on the side of good in 2012 version.

** From [[WesternAnimation/TeenageMutantNinjaTurtles1987 the original Fred Wolf cartoon and the accompanying Playmates toyline]]: Krang, Slash, Bebop and Rocksteady, Dark Water, Ace Duck, the Punk Frogs, Mondo Gecko, Scumbug, Mona Lisa, Don Turtelli, Groundchuck and Dirtbag, the Channel 6 News crew, Antrax, the Neutrinos, Big Louie, the Rock Soldiers, the Grybbx, Metalhead.

** From [[WesternAnimation/TeenageMutantNinjaTurtles1987 the original Fred Wolf cartoon and the Playmates toyline: Krang, the Neutrinos, the Rock Soldiers, Slash, Bebop and Rocksteady, Dark Water, Ace Duck, the Punk Frogs, Mondo Gecko, Scumbug, Mona Lisa, Groundchuck and Dirtbag, the Channel 6 News crew, Antrax, Wingnut and Screwloose, Wyrm, Metalhead.
** From [[WesternAnimation/TeenageMutantNinjaTurtles2003 the 2003 series]]: Hun, Angel, the Street Phantoms, the Garbageman, Agent Bishop and the EPF, Darius Dunn, Torbin Zixx, Ch'rell.

** From [[WesternAnimation/TeenageMutantNinjaTurtles2003 the 2003 series]]: Hun, Angel, the Street Phantoms, the Garbageman, Agent Bishop and the EPF, Darius Dunn, Torbin Zixx.

** From [[WesternAnimation/TeenageMutantNinjaTurtles1987 the original Fred Wolf cartoon and the Playmates toyline: Krang, the Neutrinos, the Rock Soldiers, Slash, Bebop and Rocksteady, Dark Water, Ace Duck, the Punk Frogs, Mondo Gecko, Scumbug, Mona Lisa, Groundchuck and Dirtbag, the Channel 6 News crew, Antrax, Wingnut and Screwloose, Metalhead.

The origin is not the only marked change. April, in this incarnation, was familiar with the unmutated turtles and in fact gave them their renaissance artist names. Casey Jones is a college student living with his father who takes Raphael in. Baxter Stockman is affiliated with Krang, now a general, but not the Shredder. Human versions of Bebop and Rocksteady have been introduced their first appearance not directly connected to their original cartoon incarnations. All in all, it serves to give the series a "[[UltimateUniverse Ultimate TMNT]]" vibe: For the first time in the franchise's history, all of its disparate elements and characters are seen in one place. [[WesternAnimation/TeenageMutantNinjaTurtles2012 The 2012 cartoon]] also goes for the same vibe, but this started first.

* CanonImmigrant: A version of Venus created by Sophie Campbell and artist Pablo Tunica.

* DisproportionateRetribution: In Feudal Japan, Oroku Saki decides that not only should they assassinate a Castle Lord who possess a threat to them, but they should also perform a massacre to the innocent civilians there as a show of force for the Foot Clan. When Hamato Yoshi protests, the Shredder assassinates his wife Tang Shen and hunts him and his sons down for years, being sure to make Yoshi watch before beheading him.

* EvilIsPetty: Oroku Saki has Hamato Yoshi branded a traitor, has his wife killed, hunts the rest of his family for years and executes his four adolescent sons in front of him before finally killing him. What horrible thing did Yoshi do to deserve this? He protested Saki wanting to massacre random innocent people.

** While Karai's morals and relationship to the turtles have differed between iterations, she is usually portrayed as an AntiHero who tries implementing honorable traits into the Foot Clan whenever the Shredder isn't around, or at least [[EvenEvilHasStandards is unwilling to go to the same obscene lengths as her jonin would]]. This version of Karai ''[[Patricide murdered her own father]]'' because she wasn't as much of a cold-blooded killer as The Shredder and will often sabotage the Shredder's more moderate plans when she isn't trying to earn his approval.

* AdaptationalPersonalityChange: Bishop is much more unhinged and manic than his more more calm 2003 counterpart.

** "The Armageddon Game" takes it even further, as Rat King deliberately decided to start his own apocalypse following the death of [[spoiler:his father Dragon]], so he teamed up with the turtles' worst archenemies, manipulating many sides and causing chaos in multiple worlds, as well as using clones of the turtles to smear their names and make it near-impossible for anyone to reliably help them in stopping the war.

[[caption-width-right:350:" Change is constant."]]

** After Mikey throws down his chucks in protest of Splinter lead the foot, he uses a grapping hook much like he did due to Bowdlerization in the later seasons of 1987 series.