* AlternateCharacterInterpretation:
** The inclusion of the 1987 universe. Was it there to make the special a love letter to Turtles fandom in general by showing multiple generations working together, or a [[StrawLoser ploy by the producers of the 2003 Turtles to make their ''own'' show look good by showing how much sillier everything was in the 1987 universe by comparison]]? (That is, everything except [[UnacceptableTargets 1987 Splinter]]...)
** Similar to the above: Was the Mirage Turtles' CurbStompBattle of the other teams included as a commentary on [[FirstInstallmentWins how superior the original Turtles were]] compared to [[AdaptationDecay subsequent adaptations]]?
* BigLippedAlligatorMoment: When the 1987 and 2003 Turtles visit the 1987 universe for the first time, they witness the 1987 Turtles getting into a battle with a giant mutant banana, pizza monsters, evil leprechauns, and monstrous bowling balls, saving 1987 April in the process. After this scene, the Turtles leave, and 1987 April is abducted by the mutant banana, [[WhatHappenedToTheMouse never to be seen or referenced in the movie again.]]
* BrokenBase: Apparently, the movie's treatment of the 1987-verse divided some of the older show's fanbase. For instance, Creator/DougWalker liked the movie enough that he threw out the {{caustic|Critic}} [[WebVideo/TheNostalgiaCritic Critic]] persona and praised it out-of-character; by contrast, Walker's fellow reviewer WebVideo/{{Phelous}} was one of the few internet critics to give it an overwhelmingly negative review.
* CompleteMonster: [[WesternAnimation/TeenageMutantNinjaTurtles2003 Ch'Rell]]. After being rescued from imprisonment by [[TeenageMutantNinjaTurtles1987 1987 Shredder and Krang]], Utrom Shredder [[UngratefulBastard takes over their Technodrome]] and uses its technology to try and conquer TheMultiverse. When Shredder discovered that the Teenage Mutant Ninja Turtles are in every alternative reality, he starts to [[VillainousBreakdown lose it]]. Shredder decides to find the [[Comicbook/TeenageMutantNinjaTurtlesMirage Prime Universe]] and kill the Turtles in that reality, which he believes will [[OmnicidalManiac destroy the rest the multiverse]]. When Shredder discovers that he too will be destroyed along with the rest of the multiverse, Shredder still doesn't care, [[RevengeBeforereason putting his desire for revenge above everything]].
* CreatorsPet:
** Some fans accuse the '03 Turtles of being this, seeing how the '87 Turtles were pretty much {{Straw Loser}}s to them.
** Maybe ever moreso Ch'Rell, who was not only capable of curb-stomping '87 Shredder and Krang when he was still a bodyless brain, but later turned out to be basically unstoppable to three groups of Turtles combined (to the point of nearly being a VillainSue). His defeat came about through dumb luck.
* CrowningMomentOfFunny:
** Hun freaking out over 1987 Raphael breaking the fourth wall.
** 2K3 Mike's reaction to the Turtle Blimp.
** The GettingCrapPastTheRadar, especially Splinter's reaction to it.
** '03 Don to '87 April: "Uhh... What's with the yellow jumpsuit? Do you work at a ''car wash'' in this dimension?"
** Mirage Shredder being defeated by the 87 and 03 Turtles via garbage throwing at him, sending him to his death from the roof.
** Ch'rell [[spoiler: ''Screaming in terror'' when the Mirage Turtles jumped onto his helmet.]]
* SugarWiki/CrowningMusicOfAwesome: the {{leitmotif}} at the title card. Now if we could only hear the whole piece...
* FunnyAneurysmMoment: "Another fine mess you've gotten us into." Krang, you don't know how ''accurate'' you are.
* HeartwarmingInHindsight: Raph and Leo's brief conversation with the Splinter from the 80's cartoon has a whole new meaning when you remember that that Splinter ''is'' Hamato Yoshi.
* HilariousInHindsight: Mirage Leo's narration works even better as a parody of Frank Miller's work [[ComicBook/AllStarBatmanAndRobinTheBoyWonder now]] than in the late 80's.
** In one of the interviews, Peter Laird mentions he had no intention of the Shredder becoming the "Darth Vader" of the franchise.
* HoYay: 1987 Shredder when describing Ch'rell, and later Krang's little comment when they located him... it's in the tone of their ''voices''.
* MoralEventHorizon: 2003 Shredder does it again, as he [[spoiler:callously attempts to murder the Turtles by using them to pinpoint Turtle Prime. Granted, he's tried to kill them hundreds of times before... but not while Splinter was ''watching them die'', yes, the other Shredders have attempted this, but there was no real sign of a DeusExMachina, ChekhovsGun, or really anything this time that could save them except somebody from the outside, this is what gets Karai to ''finally'' switch sides for good.]]
* NightmareFuel: 2003 Shredder's plan. Destroy the entire universe? Watch as the entire world erases itself, everyone in it and any loved ones you may have before being erased yourself? Pretty frightening.
** There were a few other examples, such as [[spoiler: Hun's quote]] in one scene.
-->[[spoiler: Hun]]: [[spoiler: Yes... Mutation, it's a real ''horror show''.]]
** In story example: the Mirage Turtles were this to the 1987 Turtles, who were so afraid of their "willing to kill, dismember your body parts and do it with a smile" counterparts that they dropped their weapons and fled. Hell, even Ch'rell was afraid of them when they got up-close and personal.
* OneSceneWonder: [[Film/TeenageMutantNinjaTurtles Tohka and Rahzar.]] Also, TheMultiverse slideshow.
* SuspiciouslySimilarSong: 4Kids couldn't get the rights to the music from the '87 series, so they came up with replacements.
** The '87 Turtles get a new leitmotif that sounds vaguely similar to their theme song.
** [[http://www.youtube.com/watch?v=aLxiIr1ktYY#t=484s The music that briefly plays]] while '87 Shredder scans for Ch'rell sounds a LOT like the [[http://www.youtube.com/watch?v=CZStwGZtF4w Technodrome music]] from the '87 series.
* TearJerker:
** 2003 Raphael and Leonardo's conversation with the 1987 Splinter.
*** ''Especially'' in the Uncut version, because that scene references a (deleted from the original) scene where the 2003 Splinter voiced similar sentiments. It seems that no matter where in the Multiverse you go, Splinter is always a rock of stability and calm for the turtles.
** Seeing the supporting cast of the 2003 series being erased, along with their world.
* VillainDecay: This Trope was inverted for threats from the 2003 such as Hun, who [[spoiler:mutated into a Turtle monster, while this condition isn't exactly ''liked'', he actually becomes much more powerful, so powerful, in fact, that ''none of the Turtles can defeat him''.]]
** Played ''very'' straight with Shredder and Krang, who went from goofy but somewhat menacing in the '87 show to entirely useless here.
*** Justified in that they're nothing compared to [[EvilerThanThou the Utrom Shredder]].

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