YMMV / Batman vs. The Teenage Mutant Ninja Turtles

• Adorkable: Donnie and Mikey elicit this kind of reaction, because of playing the part of the Dork Knight very consistently.
• Anti-Climax Boss: Played for Laughs twice:
  • Poison Ivy gets mutated into a monstrous venus flytrap creature... which is rooted to the ground, and whose limbs are too short to reach all the way across the room. Our heroes don't even bother to fight her, instead just sticking to the walls and walking by while she futilely snaps at them.
  • Robin approaches Baxter Stockman and tells him to get ready to fight. Baxter instantly surrenders, prompting Robin to point out how disappointing this is.
• Complete Monster: Shredder and Ra's Al Ghul are the leaders of the Foot Clan and League of Assassins, respectively, who struck a deal in the past. Shredder would help Ra's build a machine, capable of spreading dangerous mutagen across Gotham City, while Ra's in return would provide Shredder with the location of the Lazarus Pit, which would grant Shredder immortality. Shredder, invading various corporations and killing the staff who happened to be there and stealing technology, was able to nearly complete the machine, only failing to acquire the Cloud Seeder. Hearing about the failure, Ra's Al Ghul changed their plans and took Shredder with him to invade Arkham Asylum, killing all the guards there and freeing prisoners, but not before taking the formula for Joker Venom from The Joker and giving him mutagen, so that he could mutate the inmates to distract Batman and the Turtles. After Ra's hired The Penguin to steal the Cloud Seeder, he and Shredder take it away, killing all of Penguin's henchmen and threatening to kill him as well when he demanded a payment. Hoping to combine Joker Venom with mutagen and create a far more dangerous substance, that would not only painfully mutate people, but make them homicidal and extremely aggressive, Ra's and Shredder prepare to spread this to thousands of citizens of Gotham, to create chaos and destruction, before repeating this process around the world.
• Ensemble Dark Horse: Mr. Freeze is one of the most popular villains of both the movie and the comic for his Only Sane Man moment before being mutated and his sheer formidability as a polar bear mutant.
• Fan Nickname: Fans have taken to calling the Jokerized Shredder, "The Shredder Who Laughs".
• Harsher in Hindsight: In this movie, Bane tries (and fails) to break Donatello's back thanks to his shell. In the IDW comics, Bebop and Rocksteady not only succeeded in breaking Donnie's shell (with a sledgehammer), but it almost killed him as a turtle's spine is fused with the shell itself. Bane's attempt can be an uncomfortable reminder of that.
• Hilarious in Hindsight: This is not the first time Batman faced the TMNT and mentioned Bane, Harley Quinn and also Shredder
• Like You Would Really Do It: The retromutagen is said to have a 40% chance of fatal side-effects. But as soon as we see Batman get turned into a mutant, we all know that chance might as well be 0.
• One-Scene Wonder: The Juggernaut elephant mutant and the T-Rex mutant barely have a minute of combined screen time in the climax, but they're nearly as memorable as the mutated Arkham Asylum prisoners.
• Popular with Furries: Some of the Mutated Arkham Inmates are rather well-liked by some furries, for being well... being mutated animals of course. Hyena Harley Quinn is especially popular.
• Shocking Moments:
  • It's an adaptation of Batman/Teenage Mutant Ninja Turtles. Made in animated format. An official one at that, which was previously thought to be a pipe dream at best. Nickelodeon and Warner Bros. has probably thrown open the doors for a lot more.
  • Troy Baker voices Batman and Joker in the same project, being the first voice actor to do so.
  • Batman fights the Shredder one-on-one. And Shredder WINS. It's only because he was feeling "merciful" that he didn't just finish the Dark Knight then and there.^note Batman only really managed to wind Shredder by throwing him off a second-story balcony, though he DID disarm the villain by breaking his hand blades. Shredder mostly won by pulling out a secret martial arts technique that took Batman off guard, bloodied him, and put him down for several minutes, but weakened Shredder as well. While Shredder could've followed through, he likely didn't have the strength to defend himself if Batman managed pull himself together and fight back. His "merciful" spiel was largely just him putting on airs. Probably.
  • The post-credits scene. Shredder emerges from the ruins of ACE Chemicals, but something’s off about him. He suddenly starts to laugh... which then turns into a deranged cackle that sounds rather familiar. He then turns towards the camera... and gives us a Slasher Smile Nightmare Face that shows that he has been jokerized!
• Special Effect Failure: At one point, Cobra Joker lowers himself down from a balcony. That would be fine, if his body was long enough to reach. But we see the end of his tail go down just as slowly, giving the impression that he's floating down against the laws of gravity.
• Spiritual Successor: While the film still uses elements associated predominantly with the 1987 cartoon (such as Stockman being a fly mutant), as well as forming a lot of the various in-jokes of the movie and the turtles' character designs are more in line with the 2012 show, the film is more stylistically similar to the 2003 cartoon, with its color palette, more subdued sense of humor, and darker tone.
• They Wasted a Perfectly Good Plot: Damian's family relationship with R'as al Ghul not being directly referenced is a source of disappointment for many fans.
• What Do You Mean, It's Not for Kids?: It's definitely surprising that Nickelodeon was involved with this movie given how surprisingly dark and brutal it can get, particularly with the mutations, some of the graphic imagery like Leo's Scarecrow induced hallucination of his brothers dying and becoming rotting corpses, and some of the blood and swearing. Notably, Shredder graphically buries a throwing star in the forehead of one of his own Foot ninjas (NOT a robot!), Ra's al Ghul beheads an Arkham guard, and Shredder punches his hand blades THROUGH a guy.

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