Teenage Mutant Ninja Turtles: Mutant Mayhem / Characters

http://tvtropes.org/pmwiki/pmwiki.php/Characters/TeenageMutantNinjaTurtlesMutantMayhem

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The Turtles

In General

Adaptational Wimp: Due to having far less experience in combat, as well as how their primary form of training came from watching martial arts movies, the Turtles are far less coordinated in fights than they are in most adaptations. Notably, they barely scrape a victory against a group of normal thugs running a chop shop early in the film, something that other incarnations of the Turtles would have no issues with.
Beware the Silly Ones: These mutant teens may be lovable dorks who only want to fit in, but they're still highly trained ninjas. They were able to handle local crime gangs on their own and saved New York from a colossal super mutant.
Brought to You by the Letter "S": They all wear belts bearing their initials on them.
Calling Parents by Their Name: While the Turtles mostly refer to Splinter as "dad" in this version, Leo refers to him by his name twice, like most incarnations.
Four-Temperament Ensemble:
- Leo is Phlegmatic; he's straight-laced, polite and compassionate and focused on leading his brothers.
- Raphael is Choleric; he's short-tempered and energetic.
- Donatello is Melancholic; he's the [1].
- Michelangelo is Sanguine; he's the most outwardly cheerful and optimistic.
I Just Want to Be Normal: Their goal in life is to be accepted by humanity and live normal lives alongside them.
Innocently Insensitive: They're teenage boys who spend a lot of time joking around and making pop culture references. Their kidding around can get extremely callous and often hurtful — but they're not malicious. They're just obnoxious teenagers with very limited social experience who think they're being funny.
No Full Name Given: Typically for the Turtles, as they are only referred by their first name. Lampshaded when Mikey tries to sign up at Eastman High's improv comedy team, asking if the brothers have surnames or not. They adopt aliases by breaking up their names, such as "Michael Angelo" and "Leo Nardo".
Parental Sexuality Squick: None of them are particularly thrilled at how lovey-dovey Splinter and Scumbug are, though how much this trope and plain old disgust applies is up for debate.
Pint-Sized Powerhouse: In the film, the Turtles are equally diminutive to their adult opponents.
Short Teens, Tall Adults: Unlike several past iterations that were close to as tall as if not as tall as their adult peers, adults seem to tower these versions of the Turtles more often than not. Note that this is similar to the original Mirage comics as well as the 1987 show.
Trademark Favorite Food: Pizza, as per usual. In the official trailer, Leo tells Splinter that the reason they came back home late was because some of them wanted to get pizza.

Leonardo

Voiced by: Nicolas Cantu^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/9e220c1f_dcb4_4673_ab74_13e26b7ea528.jpeg

The budding big brother leader of the group, "Leo" is still figuring out how to balance different aspects of being a teenage leader.

Adaptation Amalgamation: He's a composite of some of his former incarnations. The belt with his initial of his 1987 and 1997 versions, the responsible attitude of his every other previous incarnation (except the 2018 version), and the slimmer, more athletic build from his 1990 movie, 2007 CGI movie and 2018 animated series version.
Authority Sounds Deep: When he's trying to be serious as leader he invokes the trope with what sounds like a Christian Bale as Batman impression. He's suitably mocked by his brothers for it.
Atrocious Alias: Raphael realizes that splitting the brothers' names in half would result in Leo becoming "Leo Nardo". Leo tries to suggest going by "Leon Ardo" instead, to no avail.
Blue Is Heroic: It's once again there to tell you that he's the leader of the gang.
Butt-Monkey: His brothers all make fun of him a lot.
Calling Parents by Their Name: He refers to Splinter by his name twice in the movie.
Composite Character: He takes the role of the 1990 and 2014 Michelangelo as well as 2012 version of Donatello, the turtle who develops a crush on April.
Disappointing Older Sibling: Downplayed but present. He tends to be looked down upon by his brothers for being a Teacher's Pet. His tattling on them to Splinter hasn't done any favors.
The Friend Nobody Likes: Downplayed, but his brothers treat him like this sometimes, making fun of him and getting mad at him for tattling on them to Splinter.
Interspecies Romance: He wants to have this with April.
The Leader: Positions himself as the team leader, like most incarnations. The others like to mock him when he gets too serious.
Love at First Sight: He immediately develops a crush on April upon seeing her for the first time.
Nice Guy: He's polite and compassionate. Notably, when the Turtles find out April has the nickname "Puke Girl" at her school, he's the only one who doesn't laugh, instead looking like he feels bad for her.
No-Respect Guy: He gets this treatment from his brothers (Raph in particular), while generally being the most mature and level-headed of the turtles.
Teacher's Pet: His brothers accuse him of being this to Splinter... they're not totally wrong, as Leo is very clearly the most dutiful son and a bit of a tattletale. Though ironically, he's also the first one of them to realize that Splinter isn't always right.

Raphael

Voiced by: Brady Noon^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/d2700676_4310_4b6f_af4a_2fa508ea37d7.jpeg

Full of energy, "Raph" is channeling his sheltered upbringing into an enthusiasm for action. And given the threat they face, he might just be able to use it productively now.

Acrofatic: His bulky build doesn't stop him from pulling off the same stunts as his brothers, even as a toddler. Granted, some of this bulk could be muscle rather than just fat.
Adaptation Amalgamation: He's a combination of some of his former incarnations. The belt with his initial of his 1987 and 1997 counterparts, the aggressive attitude of his Mirage, 1990, 2003, 2007 and 2012 counterparts, and the muscular build from his 1990, 2003, 2007 and 2018 counterparts. He also wears a do-rag styled mask like Next Mutation Leonardo and the 2014 and 2018 Raphael. His obsession with wrestling may be a reference to the Fast Forward season of the 2003 animated series, where Raph was portrayed as a fan of Pro-wrestling.
The Big Guy: Raph is the tallest one amongst the brothers with a wider build than the other three. He is shown to flip a car off its side by himself and can throw and charge at multiple adult humans too.
Big Little Brother: He is usually younger than Leo but is the tallest and bulkiest among his brothers.
Blood Knight: Much like his previous counterparts, Ralph loves fighting.
Raph: Enough talk! I dream about fighting every night!
Don: You've got a rage problem, Raph.
Mike: Oh snap!
Raph: It's not a problem!
Childish Tooth Gap: Historically an impulsive, often immature character, is shown to be missing a tooth in this iteration's design.
Composite Character: Similar to the 2012 version of Michelangelo, he thinks of creative ways to have fun in some very dangerous ways. He also has a Childish Tooth Gap like 2012 Don and 2018 Mike.
Heroic Build: As a teenager, he is a lot more muscular than his brothers who are pretty athletic themselves. Justified as he is seen stealing Whey protein along with other grocery items in the beginning of the film.
Jerkass: Downplayed but present. While all the Turtles spend most of the movie making playful digs at each other and the world, Raph is just mean... and takes just a little too much pleasure in it for it to count as him just being Innocently Insensitive. He's also by far the Turtle who treats their foes with the most hostility. He softens a little in the second half of the movie, becoming a more obvious Jerk with a Heart of Gold.
Red Is Violent: Being the brawn of the gang after all, Raph wears a red mask and he's especially violent.
Wrestler in All of Us: Much of his fighting style is inspired by wrestling, incorporating high dives and elbow drops on his foes. The Stinger reveals that he joined Eastman High's wrestling club.

Donatello

Voiced by: Micah Abbey^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/96423386_c96f_40bb_bd33_acda277e7d10.jpeg

The geeky, smart one, "Donnie" is still developing his mind, but against the many problems they'll be facing, he'll learn to stretch his thinking to the next level.

Adaptation Amalgamation: He's some of his former incarnations in one. The belt with his initial of his 1987 and 1997 counterparts, the nerdy attitude of his every other counterpart (Mirage, 1987, Next Mutation, 2003, 2007, 2012, 2014, 2018), the skinny build of his 2012 and 2014 counterparts and wears glasses like his 2014 counterpart. He also carries a lot of random gadgets like his 2014 and 2018 counterparts. The way he uses a plan from Attack on Titan as a battle plan is also similar to how the 2003 version of Don tried to use a move from The Matrix Reloaded in the episode City at War, Part One.
Adaptational Dumbass: It's fairly downplayed, but this iteration of Donatello doesn't blatantly display the wunderkind Gadgeteer Genius elements of his previous adaptations. It's telling that he doesn't even try to employ Hollywood Hacking to shut down Superfly's mutation ray, like some animated Donnies would, opting to try and whack it off like the others. That being said, the Turtles still look towards him for additional strategies, sometimes to his befuddlement. His knowledge of pop culture does come in handy here, borrowing the neck weak point tactic of Attack on Titan to target the mutated Superfly's blowhole with the TCRI gun's gene-cleansing ammunition.
The Baby of the Bunch: According to production designer Yashar Kassai, Donatello is the youngest of the four; a potential series first for the character. This would explain his more youthful voice and frame in comparison to his brothers.
Childlike Voice: His voice is easily the youngest-sounding out of all the Turtles, by virtue of Micah Abbey being the youngest member of the voice cast (Abbey was 15 years old at the time of voicing Donatello, whereas his co-stars ranged from 17 to 19).
Composite Character: This version of Donatello is obsessed with a TV show, Attack on Titan, similar to 2012 version of Leonardo (Space Heroes) and various incarnations of Michelangelo (who, in the 2003 show was obsessed with Justice Force as well as being a Pop-Cultured Badass, well versed in various other shows, including Star Trek).
Nerd Glasses: Donatello, historically the nerd of the team, wears enormous square glasses. In Splinter's flashback about their origins, it's shown that Donnie has been wearing them since he was a toddler.
Otaku: Is a huge anime and manga fan. He owns copies of AKIRA, geeks out over an Attack on Titan drawing, decorates his bo staff with a Satoru Gojo sticker, and wears a JoJo's Bizarre Adventure hoodie.
Screams Like a Little Girl: When he gets accidentally stabbed in the leg by one of Raph's sais, he lets out an extremely long, high-pitched scream.
The Smart Guy: As Splinter says in the trailer, he is the brains of the group.

Michelangelo

Voiced by: Shamon Brown Jr.^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/91e91499_6cc7_4602_9f44_05e58c1d45a1.jpeg

The most fun-loving of the turtles, Michelangelo is optimistic and light-hearted. With a new threat looming, he'll have to flex his creative mind and stand alongside his brothers.

Adaptation Amalgamation: He has the belt with his initial of his 1987 and 1997 counterparts, the childish attitude of his 2003 and 2012 counterparts, and is the smallest of the turtles like his 1990 live-action movie, the Fast Forward and Back to the Sewer seasons of the 2003 animated series, the 2007 CGI movie and 2018 animated series counterparts.
Adaptational Ugliness: Downplayed, but Michelangelo's head shape usually looks similar enough to his brothers'. Here, his head is wider-looking, akin to a watermelon. He even lampshades this when holding a watermelon at one point.
Donatello: Your head looks like Stewie had a baby with Hey Arnold!
Apologetic Attacker: When the Turtles launch the other mutants out of a van, Mikey is quick to apologize. He apologizes again for the incident to Mondo.
Bizarre Taste in Food: He apparently likes to eat pizza with bits of waffles for breakfast. It's also worth noting he says this as he grabs a slice of pizza straight out of a dumpster, with no ill effects.
Composite Character: He tends to disrespect Leonardo like various incarnations of Raphael. Similar some older versions of Mike, like Mirage and the 1987 version, he's more of a laidback fun guy than a hyperactive one.
Improv Fu: This incarnation of Michelangelo calls particular attention to his knack for improvisation, which he weaponizes in the fights against Superfly's crime ring and eventually against Superduperfly himself once he's got the turtles on the ropes.
Nice Guy: While he can be mischievous, he's otherwise very friendly and outgoing and just wants to make people happy.
Plucky Comic Relief: Michelangelo brings much of the comedy in the movie. In fact, he wants to join the school's improv comedy team. Fortunately, he does in the end.
Pubescent Braces: A close-up of Mikey's face shows that he has braces as part of his character design this time around.

Sewers

Splinter

Voiced by: Jackie Chan^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/d8faa224_0e32_4286_a15c_50530f47bb31.jpeg

An unlucky, lonely rat at first, Splinter came in contact with The Ooze, and became the Turtles's father. Unfortunately, due to some bad experiences on the surface, he also became an overprotective father, who the teenage turtles are starting to chafe under.

Actor Allusion: This version of Splinter is extremely reluctant to fight but is a master martial artist with a knack for improvising weapons in the same vein as his voice actor.
Adaptational Backstory Change: This version of Splinter has no known relation to Hamato Yoshi, instead being an ordinary rat from New York.
Adaptational Jerkass:
- Previous versions of Splinter had either been human or had been familiar with the kindness humans are capable of, thus he was fairly receptive to the Turtles being familiar with them. Here he has a massive prejudice against them due to humans treating him with hatred and disgust when he was a normal rat, and having a very bad experience he had when he tried bringing his sons to the surface as a younger mutant, though it doesn't take much for him to warm up to April. He does let go of his fear and hatred of humanity by the end of the film though.
- In most incarnations, he generally adopts the turtles out of his own paternal instincts. Here, due to his lonely background, he initially tried to scare away the baby turtles, until he saw that they didn't hate him like everyone else.
Adaptational Mundanity: Previous versions of Splinter are either the mutated form of ninja master Hamato Yoshi, or a pet that learns ninjitsu from Yoshi. This version learns martial arts from watching internet videos and kung fu movies, though this does raise the question of where he managed to scavenge the Turtles' traditional ninja weaponry from in New York of all places.
Adaptational Nationality: While he has an Asian accent, he is not Japanese unlike most incarnations of Splinter. It is implied that he has been American his whole life.
Adaptational Nice Guy: While he's an Adaptational Jerkass with regards to his views on humans, he's a little less corporal when it comes to his upbringing of the Turtles compared to past versions of Splinter who might physically discipline his sons with hits or put them through more grueling training regimens as punishment. This version of Splinter has so far only been shown to verbally dress them down about being late or the dangers of humans without lifting a hand against them in anger. And even when it comes to the physical aspects of their training, it's implied through flashbacks that Splinter was basically learning alongside his sons and didn't put them through anything too grueling that he personally could not handle.
Adaptational Wimp: Previous iterations of Splinter was a wizened ninja master, having either learned it when he was human, or learned it by observing his human owner from his cage. Like his 2014 version, he learned martial arts from scavenged instructions (in this case, old instructional tapes and Kung-Fu movies) and started learning ninjitsu at the same rate as his sons, and even compared to his 2014 counterpart he's shown to have less fighting experience. In his fight against the human soldiers who captured his sons, he's shown to struggle a little more in combat against them, even though he still comes out on top.
Adapted Out: Splinter's ties to the Hamato clan, either as the pet of Hamato Yoshi or as the mutated form of Yoshi himself, are completely omitted from this iteration. This Splinter was simply a stray sewer rat who never had an owner or any contact with humans prior to his mutation.
Afro Asskicker: He had an afro-like hairdo in his prime, as shown in the flashback detailing his and the Turtles' origins.
Because You Were Nice to Me: He adopts the Turtles as his own because they were the first ones to accept him. He is also quick to befriend April, the first human who displayed no hostility towards him.
Bigotry Exception: After meeting April and realizing that she's a good person, he still believes that all humans are evil, except her.
The Cloudcuckoolander Was Right: Of all his various arguments against interacting with people, the one he repeats most frequently is that the humans "milk" them for their DNA. His sons dismiss this, pointing out that they apparently don't even have nipples, only for Splinter to be technically proven right when they get hooked up to TCRI's machine, called the Milker.
Cool Old Guy: He may be old, but he can kick butt.
Composite Character: He has the lack of connection to Hamato Yoshi of his Michael Bay counterpart and the training methods of his Rise counterpart.
*Crack!* "Ow, My Back!": As the biologically oldest mutant (Superfly being about the second oldest overall as an adult, and Splinter mutating into a middle-aged anthropomorphic rat during his transformation), the film emphasizes the toll age has taken on him. He doesn't leave the sewer home much because his advanced age means he's not as agile or stealthy as the younger turtles on their supply runs, reluctantly forcing him to leave the jobs to them, and his infiltration of TCRI to rescue them is swiftly detected, with him falling out of an air vent before the squad of goons. He throws his back out several times when in a pitched fight with the same goon squad, and is physically overpowered a couple of times when grappled, forcing him to improvise with his environment.
Empty Nest: In addition to his fear of humanity he shows some fear of being an empty-nester parent, telling the Turtles that they're all he has and desperately trying to make them want to stay in the sewers. Between finally making peace with humanity and falling in love with Scumbug, he gets better.
Everyone Has Standards: As much as he fears and hates humanity for most of the movie, even before he realizes what he's becoming, Splinter is still against Superfly's plan to eradicate all humanity and replace them as the dominant species; if for no other reason than morality, thinking crossing that line makes them no better than humanity.
Fantasy-Forbidding Father: Splinter generally wants to keep his sons safe from the human world, and scolds them for showing signs of interacting too closely with them. He initially grounds the Turtles for a month because they overstayed their supply run to watch an outdoor movie event.
Foil: To Superfly. Both of them are mutants with an adopted mutant family who grew to hate humans after a bad experience where they tried interacting with humans, only to get attacked by an angry mob, and both act very controlling to their family (although Splinter is somewhat more lenient). However, Superfly is willing to exterminate the human race, while Splinter refuses to stoop to the same level as the humans, and Splinter ultimately learns to let go of his hatred and make peace with the humans thanks to his sons and April, while Superfly never lets go of his hatred.
Friendless Background: Before his mutation, none of his fellow rats liked him, dogs didn't like him, raccoons didn't like him, and humans always hated him the most. The only friend he did have was a cockroach named Kevin, who got stepped on and had his corpse eaten by Splinter.
Humans Are Bastards: Due to humans treating him with hatred and disgust when he was a normal rat, and a very bad experience when he tried visiting the surface with his sons when they were infants and the humans tried to attacked them, he constantly told his sons for years that humans are "the demon scum of the earth that lust to murder anything that which is different from them". Although that doesn't stop him from admitting that he likes Chris Pine (and to an extent Chris Pratt and Chris Evans).
I'm Standing Right Here: When Leo confesses why he and the brothers were out late, Mikey berates him for "ratting" them out. Splinter is quick to admonish Mikey for doing so in his presence.
Interspecies Romance: He falls in love with Scumbug, who is, well, a bug mutant.
I Was Quite the Looker: In contrast to his prime (see Afro Asskicker above), Splinter has gone gray and balding by the present.
Jerkass Has a Point: Splinter's fear of humans isn't completely unfounded given that every single mutant in the movie was treated like monsters by them. If it weren't for April's interference, humans would have resulted in Splinter being unable to turn the fight against SuperDuperFly around.
Jerkass Realisation: While Splinter has spent the Turtles' lives telling them that he is encouraging them to stay in hiding for their own safety because humans would threaten them, hearing Superfly basically express the same anti-human sentiments prompts Splinter to realize that his attitude was too extreme.
Official Couple: With Scumbug, in the end.
Old Master: Like any version of Splinter, he's great in a fight despite his advanced age, taking down multiple armed guards even before taking up his son's weapons when he shows up at TCRI to rescue them.
Only Known by Their Nickname: A variation. He is only referred to as "Dad" by the Turtles for most of the film, except for two instances, where Leo refers to him by his name (once as "Master Splinter" and once as "Splinter").
Pragmatic Adaptation: Splinter's character arc in the film revolves around him learning to trust humans, initially believing them all to be cruel and hateful towards both mutants and animals. To accommodate this, his original backstory as the pet rat of Hamato Yoshi is completely omitted, meaning this version of Splinter has no positive past experiences with humans.
The Shut-In: Explicitly referred to as this by the Turtles due to his fear and hate of humanity. It's implied that Splinter showing up at TCRI is the first time he's left the sewers since his disastrous attempt to explore the city when the Turtles were babies.
Taught by Television: In this continuity, he learned martial arts by watching internet videos and kung-fu movies.
Truer to the Text: Hamato Yoshi being Adapted Out aside, this is the first animated Splinter since Nickelodeon and Paramount's 2009 acquisition of the franchise who was a rat mutated into a humanoid, rather than a human who turned into a rat.
Ugly Cute: As Splinter says himself, back when he was just a regular rat, he describes himself as looking rather cute. Despite being, well, a rat.
Well-Intentioned Extremist: He prevents the Turtles from venturing out of the sewers to congregate among the humans, telling them false rumors about their natures and even grounding them for a month after learning they sneaked in a brief outdoor movie watch. This is all because the one time he did allow himself and the Turtles out of the sewers, they got attacked and chased away by the public to the point where he has a brief panic attack when he thinks it's going to happen again.
Younger Than He Looks: In Splinter's backstory of finding the turtles 15 years ago, he describes himself as "a young rat in [his] twenties". Assuming he's talking in terms of human years and isn't lying about his youth, he's anywhere between 35 to 44 after the Time Skip, yet has graying fur.

New York City

April O'Neil

April O' Neil

Voiced by: Ayo Edebiri^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/2c82d0c1_c85b_4ac2_a9b1_1b0956a91def.jpeg

Age Lift: Again, April is depicted as a teenager, instead of an adult with a job like in the original comics.
Beauty Equals Goodness: She has the least stylized design of any human in the movie and she's the first human to accept the Turtles rather than fear them.
Big Beautiful Woman: Most versions of her are svelte and conventionally pretty, while the version is noticeably chubbier but still attractive enough to garner Leo’s affection nonetheless.
Disabled in the Adaptation: For the second time in the franchise, April is portrayed as requiring glasses.
Embarrassing Nickname: Her classmates call her "Puke Girl" because of one incident where she vomited horribly on camera due to severe Performance Anxiety.
"Not So Different" Remark:
- April does this to herself, bluntly telling the Turtles that if not for the heroic impression she had of them through helping to get her moped back and beating up the chop shop thugs, she would have been a lot more freaked out and averse towards them on their first meeting, not unlike the humans who menaced the baby turtles and Splinter on their excursion above ground. This ultimately inspires the Turtles to take down the publicly-recognised criminal of Superfly so the rest of New York likewise has a favourable impression of them.
- April later reveals she was actually pursuing the Superfly story for a similar reason, wanting to perform a public deed to get others to see her as a hero and move past her embarrassing past incident of "puke girl", explicitly comparing their motivations.
Once Done, Never Forgotten: She's still known as "Puke Girl" by her classmates due to one incident where she got severe performance anxiety on camera and vomited a torrent of puke all over the set. She admits that she was pursuing the Superfly story so that she could be seen as a hero rather than that girl who vomited on camera.
Race Lift: April is depicted as an African-American again, like in Rise of the Teenage Mutant Ninja Turtles. Though this is downplayed, as April in the original comics was actually a case of Ambiguously Brown, with Eastman claiming she is supposed to be mixed-race with no mention of what her ethnic background is supposed to be and Laird claiming she was Caucasian, which most adaptations follow.
Stress Vomit: This is how April got the nickname "Puke Girl": she vomited an absolute torrent of puke on camera after a bout of severe performance anxiety.
You Are a Credit to Your Race: Despite his deep-rooted Fantastic Racism against humanity in general for most of the movie, April's aid in alerting him to his sons' peril and aiding him in rescuing them leads to Splinter terming her the only good human he knows, explicitly calling them out for endangering her by helping Superfly's plan along though delivering the final component to him. However, he's still insistent on his family hiding from the human world after their exploitation by TCRI despite that, noting that one good human won't change the danger they face.

The Crime Ring Heads

Chop Shop Boss, Bald Bronson, Normal Nate, Short Sharon, Toupee Tom and Bad Bernie

Voiced by: Mike Rianda (Chop Shop Boss), Dempsey Pappion (Bald Bronson), David Faustino (Normal Nate), Myra Owyang (Short Sharon), Dany Mastrogiorgio (Toupee Tom) and Michael Badalucco (Bad Bernie)^{Foreign voice actors}

The criminals running the crime ring that is connected with Superfly and his plans.

Alliterative Name: The named crime bosses all have names following this pattern.
Curbstomp Battle: Their goons end up suffering this at the hands of the Turtles.
Dirty Coward: Besides the Chop Shop Boss who joins his goons in fighting the Turtles, the other crime bosses aren't shown fighting with Normal Nate fleeing in terror from Raphael.
Equal-Opportunity Evil: Bald Bronson is an African-American man while Short Sharon is an Asian woman.
No Honor Among Thieves: Besides the Chop Shop Boss who is taken out before them, they all sell each other out when threatened by the Turtles with Bad Bernie in particular selling out Superfly.
You Have Outlived Your Usefulness: Their implied fate if Superfly's plan succeeded.

Techno Cosmic Research Institute (TCRI)

Baxter Stockman

Voiced by: Giancarlo Esposito^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/0f25885f_b176_49c2_99c2_b5a357d6d47c.jpeg

A rogue TCRI scientist responsible for creating the ooze that mutated the Turtles and all the other mutants.

Adaptation Origin Connection: In the opening scene, Baxter is the one who dumps the vial of ooze down into the sewers to keep it out of TCRI's hands, inadvertently leading to Splinter and the turtles getting mutated. In most iterations, Stockman has no connections to the Turtles origins, and the ooze landing in the sewer is usually the result of a freak accident. And Stockman also is not a TCRI employee in most versions.
Adaptational Heroism: This version of Baxter is not an outright villain or antagonist like he is in most other adaptations. While he's still a Mad Scientist, he is a benevolent, tragic figure who simply wants to create mutant children to raise them as a family, and he doesn't live long enough to ever become an active threat.
Adaptational Ugliness: Most versions of Baxter Stockman look perfectly normal, barring being turned into either a mutant fly or a cyborg. This version of Baxter is balding, has very unkempt hair, and is hunched over.
Advertised Extra: Despite getting his own character poster, Baxter is killed early into the film.
Age Lift: In most versions except Rise, Baxter Stockman is usually depicted as a man in his 30s. While in Mutant Mayhem, Stockman is the same age as his voice actor. ^note
Bald of Evil: In most versions, Stockman has hair, while this version of him is bald, though it's subverted in that, while he is indirectly responsible for the dangerous mutants running around, he only mutated animals so that he could have a family to raise.
Death by Adaptation: While Baxter is usually a prominent figure in other iterations, this version is killed by an explosion in his first scene, 15 years before the main events of the film.
Decomposite Character: In most adaptations, Baxter's experiments result in him turning himself into a giant mutant fly. Here, Baxter remains fully human, and Superfly — an ordinary fly that he experimented on with the mutagen — is a completely separate character.
Face of a Thug: He's physically one of the ugliest and most sketchy versions of the character, but what's seen of him points to him being a lonely man who was mutating animals just to create a family of his own.
I Just Want to Have Friends: Baxter claims that he has been an outcast for his entire life and has never felt accepted by other humans, not even by his own family. This inspires him to create Superfly and the other mutants, having decided that they will be his family instead.
Ink-Suit Actor: He does somewhat look like a more cartoonish and unkempt Giancarlo Esposito.
Nice Guy: More or less. He did create dangerous and powerful mutants through his mutagen formula, but his only intention for doing so was so he could have a family with his "children", and even dies trying to keep his mutagen formula and children out of TCRI's hands, whose intentions for it are implicitly not benevolent in forcing the mutants to become lab rats, soldiers and tools of war, not caring at all for their individuality and welfare. It's implied that he would have been against the direction that Superfly and the other mutants took in trying to strike back against humanity, and encouraging of Splinter's own passive family unit.
Small Role, Big Impact: He doesn’t make it past the opening scene, but his mutagen is what creates the Turtles, Splinter, Superfly, and the latter’s gang.
Truer to the Text: Downplayed, but given how much the movie borrows from the Fred Wolf animated series, this version of Baxter Stockman doesn't mutate into a fly, and the fly character is a separate character, unlike that show and versions that borrow from that version and like the original Mirage comics. That said, he doesn't become a cyborg nor did he create the Mousers and is long dead before the Turtles mutate (as far as we know anyway). He also seems like a nice guy, unlike the comic book version.
Uncertain Doom: Superfly says that he died in the explosion, but April's new evidence board in The Stinger has a picture of a Mouser on it, indicating that he may still be active.
You Are a Credit to Your Race: Superfly hates humanity as a whole, but he holds a certain fondness for the late Stockman, considering him his "father".

Cynthia Utrom

Voiced by: Maya Rudolph^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/a431f6d2_02ee_42de_88c2_bebe7c723973.jpeg

The mysterious head of TCRI.

Ambiguously Human: Her name, appearance, and voice all indicate that she's an Utrom in disguise, likely even Krang himself, but never reveals herself in the actual film.
Composite Character: She visually resembles and sounds like Krang from the 1987 cartoon (although Krang was not originally an Utrom, he was a disembodied brain of an alien warlord from Dimension X and hence resembled the Utroms), but her goal of trying to milk the Turtles and make supersoldiers using the mutagen in their bloodstream is similar to that of Agent Bishop from the 2003 cartoon. Her being the head of TCRI, using "Utrom" as her last name and having purple hair is also similar to Mr. Mortu from the 2003 series.
Corrupt Corporate Executive: She's the executive of a scientific corporation seeking to capture the Turtles and drain them dry of all their blood so she can recreate Stockman's mutagen and create an army of mutant super-soldiers to sell off to the highest bidder. And she doesn't care if she has to kill four teenagers in order to do it.
Electric Torture: When the Turtles speak out in any way, she simply responds with the press of a button that delivers an electric shock to them.
Expy: Unlike actual Krangs, Cynthia is more of a hands-off manipulator and Pragmatic Villain who'll bring in outside help when necessary, much like DC's Amanda Waller.
Greater-Scope Villain: Her attempt to seize Baxter's research in the opening scene is what leads to everything being kickstarted, from Baxter's death to Superfly and his gang going into isolation to Splinter and the Turtles' mutations. She also goes on to play this role in the present day, plotting to hunt down the Turtles so she can take their blood and recreate Baxter's formula.
Herr Doktor: She is a mad scientist with a vaguely Eastern European accent.
Hugh Mann: From a meta standpoint, it's fairly obvious to any Turtles fan from her name, appearance, behavior and voice that she's an Utrom or Kraang in disguise, but she never reveals herself during the film.
Nightmare Fetishist: Cynthia certainly has a weird fixation on "milking" Stockman's mutants. She could have literally picked any other word...
No Celebrities Were Harmed: Maya Rudolph's performance has her doing a clear imitation of Pat Fraley's Krang voice from the 1987 cartoon.
Psychotic Smirk: She's prone to smirking a lot when the odds are in her favor.
The Unfought: She does not personally fight the Turtles or Splinter in the movie despite being the Greater-Scope Villain of the story.
Villain: Exit, Stage Left: During Splinter's break-in into TCRI, her goons escort her to a secure location, and she isn't seen for the rest of the movie until The Stinger.
Villainous Face Hold: The way she caresses Mikey's face is very off-putting when she reveals to the Turtles her endgame to them.
Would Hurt a Child: She doesn't bat an eye at the detail that the Turtles are all teenagers. And when the "required amount" is shown, it's made pretty clear that the four won't survive the process.
Cynthia: "Continue milking them until we have the required amount."

Squad Leader

Spider

Voiced by: Derek Wilson^{Foreign voice actors}

Cynthia's main enforcer of TCRI's attempts to capture any of Stockman's mutants.

All There in the Manual: He remains unnamed in the movie, but the end credits of the movie and the junior novelization refer to him as "Spider".
The Dragon: He's Cynthia's main muscle on the ground when tracking down and subduing the mutants for TCRI's purposes, and is the primary opposition the Turtles face when TCRI's attempt to track Superfly leads to them capturing the teens instead.
Eyepatch of Power: In the opening scene, he loses his left eye after getting attacked by the young Superfly. He wears an eyepatch over it in the present day.
Expy:
- Hun from the 2003 cartoon, another blonde muscular Dragon. Although, he is a lot smaller than the 7 feet tall Hun.
- The Thug Actor (voiced by the late Randy Savage) from Bolt.
Groin Attack: Splinter subdues him painfully with one of these delivered with Michelangelo's remaining nunchuck, followed by an Offhand Backhand to the jaw when he still tries to rise up again.
Helmets Are Hardly Heroic: In the prologue, he's the one member of the strike force capturing Baxter Stockman to have his face uncovered. This winds up biting him when the baby Superfly attacks him and grapples onto his face, apparently stabbing/gouging his left eye out, and pushing him into a berserker rage as he attempts to blast his attacker, ultimately causing an explosion in the lab with a missed shot hitting some volatile chemicals that kills Stockman and burns a great deal of his research papers, the very thing he was cautioning his Squad to avoid when subduing him.
It's Personal: Losing his eye to a baby Superfly apparently gave him quite a grudge against mutants in general, as he scornfully calls the Turtles "freaks" when capturing them, and appears to be taking a good deal of vindictive pleasure out of overseeing them being painfully "milked" for their mutagen blood.
Undying Loyalty: He appears to have this for Cynthia Utrom, faithfully carrying out his orders on her behalf and even being on a First-Name Basis with her despite their boss-employee relationship.

The Mutants

In General

Adaptation Species Change: While in previous versions they ranged from animals-turned-mutants, humans-turned-mutants, aliens, or even magical beings, here, they are all born as mutants, except possibly Superfly.
Affably Evil: Although they're all plotting to exterminate humanity and take over the earth, they're motivated by a sincere desire to make a new, mutant-ruled world where all the animals are equal and happy. When they first meet the Turtles, they are all overjoyed to have finally found other mutants and are more than willing to accept them into the gang, and are genuinely disappointed when they realize the Turtles are actually trying to stop them. It turns out all of them except Superfly were pressured into living up to the "evil" part. When the Turtles make them realize that exterminating humanity won't make them happy, they pull a Heel–Face Turn.
Evil Is One Big, Happy Family: They all view one another as siblings and they are quite malicious. Initially. After their Heel–Face Turn, they lose the "evil" part but maintain the "family" part.
Family of Choice: Sure, they’re mutants of different species (being a fly, a warthog, a rhino, a gecko, a frog, a alligator, a bat, and a cockroach) but nevertheless, they’re still a family, a family of mutants, but a family no less. At the end of the movie, they more or less become the Turtles' extended family and live down in the sewers with them.
Heel–Face Turn: All of them except Superfly have a change of heart after the Turtles convince them that killing all humans won't make them happy.
Mixed Animal Species Team: Again, their family contains mutants of different species.
Truer to the Text: There are no humans being mutated into animal hybrids, which is actually much close to the original comic series.
Ugly Cute: Much like with the Turtles above, the Mutants as babies looked very odd, but were also kinda adorable.

Superfly

Voiced by: Ice Cube^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/44a19478_54ed_4d38_b199_61337a4436d3.jpeg

The leader of the mutant gang who has become a feared criminal in the city.

Adapted Out: Not Superfly himself, but the junior novelization ends before it gets to the part where he becomes SuperDuperFly, with the only hint being that the Turtles and the mutants are prepared to deal with him again when he returns.
Affably Evil: He initially starts out this way when he first meets the Turtles, being surprisingly amicable and genuinely friendly with them with him even declaring them as cousins. He unfortunately loses this by the end of the film once the Turtles and the rest of his reformed gang go against his genocidal plans.
Ain't Too Proud to Beg: He displays this rare moment when the combined pushback of his crew and Turtles actually get pin him against the controls of his machine. He pleads with the bystanding Splinter, hoping to get him to understand his extremist motives and implicitly provide backup in calling off Splinter's rebellious kids.
Ax-Crazy: He is more than willing to kill anyone who are unlucky enough to face his wrath or get in the way of his goals. He gets worse when he becomes SuperDuperFly.
Bad Boss: He doesn't hesitate to try to kill his own crew when they start defying him. Even putting that aside, he verbally mistreats them, such as criticizing Ray Fillet's singing and shaming Genghis Frog for his name.
Bad People Abuse Animals: He gleefully harms various animals for the sake of power.
Big Bad: He is the leader of the mutant crime syndicate that the Turtles faces in the movie, and seeks to mutate all animals on the planet while enslaving or killing humanity.
Big Brother Bully: He positions himself as the older brother of his fellow mutants but is short-tempered and verbally abusive over their quirks, like Ray Fillet's singing or Genghis Frog's name. He is particularly domineering about completing his plan, ostensibly for their safety, but is willing to physically coerce them when they no longer want to go along with it.
Bigotry Exception: Baxter Stockman is the one human Superfly doesn’t hate. Superfly sees him as a father and misses him after his death.
Brought Down to Normal: In the Post-Credits Scene Cynthia Utrom is seen with a fly in a jar, implying he might have turned back into a regular fly.
Composite Character:
- Superfly seems to be a combination of the mutant fly form of Baxter Stockman and Hob from the IDW continuity as the leader of an antagonistic Mutant gang that seeks to have the Mutant species take over the humans.
- Backstory-wise he takes some traits from Splinter that are absent from the latter's incarnation in this continuity, primarily having once been an animal under the care of a loving human whose enemies ambushed and got them killed, with the event shaping up the way the mutant turned out.
Cynicism Catalyst: Like Splinter, he tried to integrate his family into human society and they were cruelly rejected for their appearance. Unlike Splinter, one human was heavily persistent in trying to kill them, pushing Superfly into beating him within an inch of his life and convincing him the only way his family would ever be safe is to subjugate humanity by mutating every animal on Earth.
Death of Personality: Possibly. In order to stop his massive Kaiju rampage as "SuperDuperFly", the Turtles have to force a vial of anti-ooze into his mutated blowhole, undoing his amalgamated mutated form and reverting him back into the form of the common housefly he was in the beginning, along with restoring all the animals he'd absorbed. In this condition, he's not capable of speech or indicating if he still retained the human intelligence his mutation granted him, but in The Stinger, it's shown that Cynthia Utrom captured and contained him in a specimen jar regardless, leaving it unclear if he does retain his mental faculties or if it was merely to study the effects the mutagen had had on him.
Decomposite Character: Baxter Stockman, who gets mutated into a fly in some past continuities, appears as a separate character who is never mutated. Instead, he views Baxter as his dad, despite otherwise seeming to hold humanity in contempt.
Detrimental Determination:
- He recounts to the Turtles that like them, the younger Superfly and his siblings were still interested in the human world from watching Tv programs in their hideout, and once grown up enough, decided to venture out to see if they could also be accepted into it. Just like the Turtles' own failed expedition, they were harshly rejected and pursued by an angry mob, fleeing for their lives. Superfly recalls that there was one aggressor who pursued them more vehemently than the rest of the crowd, eventually catching up to them alone, and forcing Superfly to fight back, ultimately thrashing him to within an inch of his life. His persistence only convinced Superfly that humans would never accept mutantkind, and that the only way to protect his family was to return the violence in kind, additionally also giving him a taste for savagely hurting humans that he's come to relish by the present day.
- His Fantastic Racism against humanity and desire to enslave them as the only means of ensuring a safe world for his crew/family to live in and be accepted ultimately only results in them turning against him when the Turtles managed to talk them down, convincing them that they don't really want to go through with Superfly's plans to be happy. Superfly's own refusal to give up ultimately results in him becoming a destructive monster that the Turtles are forced to de-mutate in order to save lives, costing Superfly his powers and possibly his mind as a result. Furthermore, his attack only convinced the civilians endangered by it that the rest of the mutants were similarly hostile, leading to both the Turtles and his crew being menaced by an angry mob until April hijacked a news broadcast to set the record straight, the very thing Superfly was trying to avoid happening with his plan.
Even Evil Has Loved Ones: Despite his extreme hatred for humanity, he still loves and misses Stockman, who he considered his father. He also raised the rest of the mutant gang by himself as their adoptive father and is genuinely stung when they turn on him, but it doesn't stop him from trying to kill them.
Evil Cannot Comprehend Good: He is genuinely appalled when the Turtles and his crew refuse to partake in his Kill All Humans plan, seeing this as a sad betrayal rather than a legitimate change of heart. He also expects Splinter to aid him in his plan simply because he dislikes humans like him.
Evil Is Hammy: As expected from Ice Cube, Superfly holds no punches with his bombastic monologuing. Even as SuperDuperFly, he still doesn't slow down.
Evil Sounds Deep: Courtesy of Ice Cube himself, Superfly's voice is very deep and booming, which befits how powerful he is. As SuperDuperFly, his voice is even more deep and booming.
Fantastic Racism: Superfly absolutely despises humans, considering all of them to be shallow, judgmental monsters, and his goal is to wipe them out. The one human he does have a positive impression of is his "father", Baxter, and it's implied part of his motivation for trying to enslave humanity is how TCRI's attack on Stockman's lab lead to his apparent death, further convincing him that even a few good human supporters wouldn't be able to protect his crew against the rest of humanity.
Faux Affably Evil: Superfly is initially friendly to the Turtles, feeling a strong sense of mutant solidarity. However, as the film progresses, we see that he has subtly bullied and coerced all the other mutants into obeying him. Once he realizes the Turtles are not on his side, his friendliness disappears and any friendliness he shows to the Turtles afterwards is just a mere façade.
Flying Brick: He's strong enough to carry an ice cream truck while flying.
Foil: To Splinter. Both of them are mutants with an adopted mutant family who grew to hate humanity after a bad experience when they and their respective families tried to interact with humans, only to get almost attacked by an angry mob, and both act very controlling to their family. However, Superfly is willing to exterminate the human race, while Splinter refuses to stoop to the same level as the humans, and Splinter ultimately learns to let go of his hatred and make peace with the humans thanks to the Turtles and April, while Superfly never lets go of his hatred. Superfly even attempts a "Not So Different" Remark to get Splinter on his side, which fails.
Freudian Excuse: Despite Stockman's death, Superfly still wanted to integrate into human society at first. Unfortunately, when he tried, he and his family were attacked for their freakish appearance, and Superfly was forced to beat one of their attackers within an inch of his life to defend them. The incident permanently soured him on humanity and gave him a taste for violence that only grew worse over time.
From Nobody to Nightmare: This applies to his gang as a whole, but is more pronounced with him. He and his brethren were all normal animals who were mutated as a side effect of Baxter Stockman's secret experiments and became a feared criminal gang across New York City after the bigotry of humans destroyed their attempts at living a normal life, with Superfly's name being the one to make it to Channel 6's broadcasts. While the others are eventually persuaded to drop their vendetta, Superfly doubles down on it and attempts to destroy humanity. He gets turned into a Kaiju-sized abomination through his own merging machine and goes on a very destructive rampage throughout NYC.
Genius Bruiser: Superfly is both incredibly strong, capable of carrying whole trucks by himself, but he's also incredibly smart, as he invented his own weaponized ooze and designed his own machine to fire it into the atmosphere.
Giant Flyer: He can still fly when he's gigantic.
Humans Are Bastards: He believes in this even more strongly than Splinter does, refusing to see humans as anything besides evil monsters that need to be destroyed.
Hypocrite: He claims that he wants to create mutant freedom, yet he has no issues harming or even killing his fellow mutants (including his own crew) for standing in his way. His sadistic pleasure in slowly crushing the Turtles to their would-be deaths in front of Splinter himself and his callous disregard for the animals that were fused with him against their will speak volumes.
Implied Death Threat: He stomps a fire hydrant flat to show the Turtles what happens to those who get in his way.
The Irredeemable Exception: He’s the only member of his mutant family who refuses to change his ways and forsake his plan to destroy the human race.
Kick the Dog: In the climax, he is shown taking such pleasure in slowly crushing the Turtles to their would-be deaths while a wounded Splinter is Forced to Watch.
Knight Templar: He's convinced humans are evil and that his plan is the only way mutants can live free without the dangers of dealing with humanity's prejudice. He's so committed to his goals that he values it over the lives of both non-mutated animals and his fellow mutants, even his own family.
Laughably Evil: He has his comedic moments, such as telling Ray Fillet that he prefers listening to John Legend over his singing. However, this still doesn't make him any less of a threat.
Lightning Bruiser: In addition to his muscularly-imposing physique, his mutation grants him the speed of an actual fly, even human-sized. He's able to intimidate the Turtles by slamming into their car from several meters away and ripping the windshield off in the blink of an eye.
Motive Decay: He genuinely wanted to live in peace with his mutant family, but his growing hatred for humanity's mistreatment of mutants slowly eroded that away. By present day, all he cares about is wiping out humans at any cost, and when his mutant brethren decide that's a step too far, he turns on them for becoming "traitors".
Multi-Armed and Dangerous: Being mutated from an insect, he's got six limbs, with two of them being rudimentary arms just over his gut. They're still strong enough to sucker punch somebody.
No One Sees the Boss: April states that anyone who has seen his face ends up killed by him.
"Not So Different" Remark: When he's on the ropes by his crew and the Turtles, he specifically calls out Splinter on their common hatred against humans, trying to gain his sympathy. Superfly knows, like Splinter, they have tried and failed to integrate themselves and their families into society, almost getting killed for it. Superfly notes that what makes the two father figures differ is that he's "not a punk about it", which finally causes Splinter to snap and join his sons and the other mutants in attacking him.
Not-So-Well-Intentioned Extremist: He plays off his plan to disperse mutagen over the entire Earth as the only way mutants can live free, even at the cost of humanity's collapse and subjugation. As the film goes on, however, it becomes clear that he cares only about causing as much death and destruction to humanity as possible, even attacking normal, non-mutated animals for the sake of power; he doesn't actually give a crap about mutant freedom.
One-Winged Angel: After being submerged by his own mutation machine, combined with the surrounding animal life, Superfly reemerged as a giant powerful mutated chimera.
Pet the Dog: Murderous tendencies aside, he treats the Turtles and his crew to bowling and pizza when he gets to know the former.
Pint-Sized Powerhouse: Even as a baby he is much stronger than humans, as shown when he easily defeats Spider and his soldiers.
Promotion to Parent: After Stockman died, he had to raise and take care of his mutant siblings all by himself.
Rank Scales with Asskicking: He is the leader of his gang and its most powerful member, being strong enough to defeat all of his underlings individually- even the brutish powerhouses Bebop and Rocksteady. It's only when they gang up on him all at once that they can subdue Superfly.
Resized Vocals: When he turns into SuperDuperFly, his voice becomes louder and gains an echo effect.
Shadow Archetype: To Splinter, as both are mutants who hate humans due to being attacked after a disastrous attempt to socialize with them and do what they think is best for their families' safety and happiness, but Splinter doesn't share his desire to Kill All Humans. It's hearing Superfly point out their similarities and spout a similar speech to his mutant family to the ones he gives to his sons that triggers Splinter's Jerkass Realization.
Sir Swears-a-Lot: Surprisingly for an animated movie based on TMNT (given Raph did swear in the 1990 live action movie himself), Superfly says "damn" and "hell" quite often in this movie. But then again, he is voiced by Ice Cube after all.
Toxic Friend Influence: Good intentions or not, he encourages the worst behavior of his mutant brethren. After the Turtles get through to the rest of the mutants, they realize that they aren't happy being what Superfly encouraged them to be.
Tragic Villain: There's an element of this to him, even with his personal antagonism by the present. The flashbacks of him as a baby fly mutant and his fond memories of his "father" Stockman, as well as fully internalising his dreams of making a family with the other mutants, make it clear that Superfly Used to Be a Sweet Kid, and if not for him becoming too cynical and consumed by his Fantastic Racism towards humanity, he could have been a friendly ally towards the Turtles. A further flashback shows that it wasn't even losing Stockman to TCRI's attack that turn him violent towards humans, it was trying to integrate with the human world alongside his family when they were old enough and being violently rejected like the Turtles were. In particular, the relentless pursuit of one aggressor forced him to beat him down to an inch of his life, both convincing him that human and mutant integration was impossible as well as giving him a taste for violence against humans. Had he instead encountered someone more reasonable and understanding like April, there was a chance for him to join the Turtles' family at the end like the rest of his mutant brethren, rather than becoming outcast from them all thanks to his refusal to quit.
Unskilled, but Strong: He doesn't demonstrate any refined fighting techniques or skills in combat, but unlike the Turtles, this is because the advantages his mutations grant him are enough that he doesn't need them to win a fight. His raw strength is enough to unleash a Curb-Stomp Battle on the Turtles that amounts to him causally slapping them all down and leaving them alive only because he's more focused on securing the final machine component from them, and his speed and Flight capabilities mean he can easily outpace anybody else. When the Turtles managed to talk down his mutant brethren and convince them to side against him, he proves strong enough to overpower Bebop and Rocksteady individually and hold his own against the entire assembled mutants before they all eventually gang-pile him at once to pin him down.
Used to Be a Sweet Kid: The flashbacks to him as a baby show he was quite sweet as a child, and another flashback shows he once genuinely wanted to integrate with humanity. Being attacked by a mob for his appearance and being forced to nearly kill one of their number in self-defense permanently embittered him and led to him becoming the fanatic he is today.
Vile Villain, Saccharine Show: In this relatively light-hearted, pop culture-referencing, animated comedy film about four anthropomorphic teenaged turtles who are ninjas, we have this fly mutant who has a relatively high human kill count and who's endgame is to mutate the entire animal population so that they can kill the entire human race.
Would Hurt a Child: He has absolutely zero qualms about brutally crushing the Turtles, who are only adolescents, to their would-be deaths. Even worse, he does this in front of Splinter himself.
You Have Outlived Your Usefulness: He kills any human who aids him in creating his mutation machine.

Bebop and Rocksteady

Voiced by: Seth Rogen and John Cena^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/ef00737d_50e4_449b_a7f4_7a507c9a0d69.jpeg

https://static.tvtropes.org/pmwiki/pub/images/b7244613_8933_4e06_ba7a_7b618ca03a5f.jpeg

A warthog and rhino mutant who serve as Superfly's main muscle.

Actor Allusion: This certainly wasn't the first time Seth Rogen voiced a talking warthog who is mostly there for comic relief.
Adaptational Heroism: They are usually portrayed as hired criminal thugs of the Foot Clan but here they go along with Superfly’s criminal empire out of a desire to be accepted in a world ruled by mutants. They end up convinced to turn on him and realize that they don’t like being angry and how Superfly raised them to be. Their 2012 incarnations, who had until now been the most heroic incarnations of the characters, also pulled their Heel–Face Turn partially to become wealthy, famous superheroes, and because the alternative was letting their whole universe get destroyed; whereas these guys do it out of the goodness of their hearts.
Adaptation Species Change: Usually human criminals turned into mutants via ooze, here they are genetically born as mutants from embryos, those embryos having likely been normal animals.
The Artifact: Bebop's turtle shell shoulder armor is from past versions of the character, meant for intimidation against the Turtles - in this incarnation he'd never even heard of them until the last third of the movie and even ends up on their side. (Incidentally, Rocksteady should have turtle shell thigh armor, but this has been left out.)
The Brute: They're the physically strongest members of the mutant crew, especially Rocksteady. It's to the point that in the climax when the gang turns on Superfly, Rock is the first to challenge him, and alone. While he does end up needing help, he does such a good job that for a few moments, it looks like the fight is going to just be between Rock and Superfly. After their Heel–Face Turn they become The Big Guy for the new family.
Casting Gag: John Cena has had experience with TMNT before, having voiced Baron Draxum in Season 1 of Rise of the Teenage Mutant Ninja Turtles. Also, this isn't the first time Rocksteady was played by a WWE Superstar.
Composite Character: Like their Fred Wolf and Out of the Shadows incarnations, they're the Big Bad's left-and-right-hand henchmen even though they're not the brightest bulbs. Like their 2012 incarnations, they have the capacity for good and eventually pull a Heel–Face Turn. Some promo material also describes Rocksteady as a former Russian arms dealer like 2012's Ivan Steranko (though in the film itself, both Bebop and Rocksteady are mutant animals from birth).
- Them being mutated animal duo instead of humans mutated into hybrid creatures is more in line with Tokka and Rahzar as well as Dirtbag and Groundchuck.
Dumb Muscle: May not be the brightest mutants, but they are incredibly strong. Whether it’s from their fists or Rocksteady’s horn, you do not want to take a hit from these guys.
Fat Bastard: Bebop is very fat and works for Superfly, though Rocksteady has something of a paunch as well. Subverted when they eventually decide to join the Turtles and stand against Superfly.
Full-Boar Action: Bebop, being a mutant warthog.
Hidden Depths: They realise that they don’t like being angry all the time and that it was Superfly who raised them to be like that.
Horn Attack: Rocksteady puts his horn to use destroying an arcade machine, then ripping the door of the Turtles' stolen van off when they try to escape. He tries to attack Superfly in the same way later, but the attack gets blocked.
Rhino Rampage: Rocksteady, being a mutant rhinoceros.
Those Two Guys: Mostly, never seen apart.
Tiny-Headed Behemoth: Inverted with Rocksteady, who boasts a gigantic head, almost as big as the rest of his body, which brings attention to his powerful horns.
The Worf Effect: They're the biggest guys in Superfly's gang, the first to turn on him, and the first to get beaten down.

Leatherhead

Voiced by: Rose Byrne^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/c519ff70_fed2_4fa7_9c3a_ddb00162ded8.jpeg

Adaptational Gender Identity: In most adaptations Leatherhead is a male character, but this Leatherhead is voiced by a female actress. It is unclear how the character's gender will be portrayed, as even the toy box description uses neutral language. The novelization uses female pronouns, at the least, making it a confirmed Gender Flip.
Adaptational Nationality: This version of Leatherhead sports an Australian accent as opposed to their previous versions which range from ambiguously American to Cajun.
Adaptational Villainy: Much like in the 1987 cartoon, Leatherhead appears to be an antagonist here. However, they and the other mutants apart from Superfly redeem themselves through the Turtles' persuasion.
Ambiguous Gender: Leatherhead's gender is unclear in this version, the description on the toy box uses neutral language, and the novelization uses female pronouns for the character. The note sheet in Baxter Stockman's lab has possible names for Leatherhead, including male names; "Erwin", "Tooth Daddy" and "Albert".
Awesome Aussie: Has the accent, even though they're not from Australia like her voice actress.
Composite Character: This Leatherhead is a villain like their Fred Wolf and IDW (among other) incarnations, and has the design of the former, but pulls a Heel–Face Turn to become an ally just like their prominent 2003 and 2012 incarnations.
Never Smile at a Crocodile: Leatherhead is a giant mutant alligator and one of Superfly's minions.
Night-Vision Goggles: They wear a pair of night vision goggles.

Mondo Gecko

Voiced by: Paul Rudd^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/d4bd2ea7_7ef9_44e0_a5ae_2739fc02ee2f.jpeg

Adaptation Dye-Job: He has blue scales here.
Adaptational Villainy: Heavily Downplayed. Normally he is an ally of the Turtles and a good guy from the start, he is a member of Superfly's gang in this movie. That said, outside of his vocation he is not particularly evil or even mean and gets along with the Turtles easily to the point they don't even treat him as an enemy nor does he in return even when they harm some of his friends accidentally. And on top of that, just like the other members of Superfly's gang, he redeems himself when the Turtles get through to them.
Cool Board: Like all the other versions of Mondo, he is often seen on his board or holding it.
Lovable Lizard: Mondo is one of the first to get along with the Turtles easily, especially with Mikey. And other than being a part of Superfly's gang to begin with, he is not even evil or mean.
Non-Mammalian Hair: He’s a mutant gecko with a full head of blonde hair.
Token Good Teammate: Even before he and everybody else aside from Superfly make a Heel–Face Turn Mondo is visibly the nicest and quirkiest member of Superfly's group and gets along with the Turtles almost immediately. The only time he ever gets legitimately upset with them is after they end up causing he, Rocksteady, and Wingnut to fly through a windshield (which Mikey even feels extremely bad for doing to him), and even then Mondo never throws a punch at them and tries to talk the Turtles down in as calm of a manner as possible before Superfly gets to them.
Totally Radical: Acts like a skater dude straight from the 90s.

Genghis Frog

Voiced by: Hannibal Buress^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/b9c8bcf4_93d7_40a9_bb49_f5835ff17240.jpeg

Adaptational Villainy: While the Punk Frogs did start out as enemies of the Turtles, they were manipulated by Shredder into fighting them. Here, Genghis Frog is a member of Superfly's gang. It turns out that he is actually closer to his original interpretation, being initially led down the wrong path by Superfly before the Turtles convince him that he can be better.
Adapted Out: He's not accompanied by the other Punk Frogs.
Frog Men: He’s a Mutant frog.
Furry Reminder: When fighting Superfly, he lashes out with his tongue and sticks it on Superfly much like an actual frog hunting flies. The difference is that, since Superfly is obviously too big to pull in his mouth, Genghis pulls himself in towards Superfly and delivers a body slam.
Pre-Mortem One-Liner: Non-lethal example; he throws the Turtles' mocking words back at them before he lets go of the wheel, sending the Turtles and their truck off a bridge.
Genghis Frog: Goochie. Goochie. Goo.
Vocal Dissonance: His tiny body stands in harsh contrast to his low voice.
Walk on Water: Well, hop on water to be specific. As he and the other mutants join forces with the Turtles and Splinter to stop Superduperfly, he hops on the water to get from the shipwreck to New York.

Wingnut

Voiced by: Natasia Demetriou^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/7d5ab4e1_3ac2_483d_959e_a0d0656135c3.jpeg

Adaptational Species Change: In most other versions, Wingnut is an alien. Here, she is a mutant of animal origin.
Adapted Out: Screwloose doesn't appear to exist.
Artificial Limbs: Classic Wingnut, like some other classic mutants and anthropomorphic animals in general, had wings and arms at the same time, which already defies several natural laws. This version of Wingnut addresses that by having robot arms beneath her wings. It's also the reverse of some older versions of the character, who had normal arms and metal wings.
Bat People: She is a mutant bat.
Gender Flip: Wingnut is usually a male character.
Otaku: Implied. After moving in with the Turtles at the end of the film, she takes an interest in Donnie’s copies of AKIRA.
Token Good Teammate: Somewhat. Whilst the rest of the mutant gang are attacking the Turtles' van trying to get the necessary machine part in the back, she notes Superfly's muscle car speeding towards them and trying to convince the Turtles to hand over the part before he catches up to them and takes it back with extreme brutality.
Wingnut: Superfly's almost here and he's not going to be as nice about this!
Leo: You're not being nice!
Wingnut: He'll be less nice!

Ray Fillet

Voiced by: Post Malone^{Foreign voice actors}

https://static.tvtropes.org/pmwiki/pub/images/13bebda8_0777_439c_afc3_b55b6b61767e.jpeg

Actor Allusion: He's voiced by Post Malone, so of course he's going to try and sing every chance he gets.
Adaptation Species Change: Originally, he was a human-turned-mutant, but here, he originated from a mutated manta embryo. (Though his IDW version started as a normal manta)
Adaptational Villainy: He is usually an ally of the Turtles and a mutant hero. This time he seems to have taken a more villainous role as a member of Superfly's gang. Like the other members of Superfly's gang, he pulls a Heel–Face Turn after the Turtles get through to him.
Beautiful Singing Voice: He can sing pretty well for a giant mutant ray, but is mainly into singing his own name.
Beware My Stinger Tail: Natch, being a ray. One way he uses it is to trip up Superfly with it while he's occupied with Mikey, Raph, and Leatherhead.
Fish People: He is a mutant manta ray.
Mellow Mantas: For a would-be villain, he’s quite a gentle and easygoing soul once you get to know him.
Mix-and-Match Critters: April calls him a stingray, and he has a barbed tail like one, but he also has the mouth flaps of a manta. And Baxter Stockman's notes specifically refer to his DNA as being from an oceanic manta ray (Mobula birostris), so...

Scumbug

Voiced by: Alex Hirsch

https://static.tvtropes.org/pmwiki/pub/images/382a3186_39d2_4104_bedc_70d68299d8b2.jpeg

Adaptation Species Change: Earlier versions of Scumbug were human-born, this version started as a cockroach embryo.
As Himself: Scumbug's teaser poster describes her this way. According to the filmmakers, this was a mistake. They were likely referring to the fact that she was described as “himself” instead of "herself".
Creepy Cockroach: She's a mutant cockroach, and to be brutally honest, she isn’t really known for her looks.
Gender Flip: She's a female mutant in this continuity. In the movie, April refers to her as a "cockroach lady", and Splinter refers to her as a woman and falls in love with her by the end of the film.
Intelligible Unintelligible: Although she speaks in random garbling sounds, Splinter can understand her just fine (implied to be because he befriended a cockroach when he was a normal rat).
Interspecies Romance: She falls in love with Splinter, who is a mutant rat.
Multi-Armed and Dangerous: Like Superfly, she's got two rudimentary arms over her gut, though she doesn't use them much (aside from airlifting Splinter and all the Turtles in the climax).
Official Couple: With Splinter, in the end.
Promoted to Love Interest: Unsurprisingly, this is the first version of the character that serves as a love interest for Splinter, of all people.
Sir Not-Appearing-in-This-Trailer: Shortly after Scumbug's poster was revealed, Paramount removed it from most of their platforms, and Scumbug's key art hasn't appeared anywhere since. This appears to be on purpose, as the filmmakers were upset that the poster mistakenly listed the character as male, necessitating its removal.
Tertiary Sexual Characteristics: The only ways to tell she is female are that she is pink and has small yet noticeable eyelashes.
The Unintelligible: Scumbug only speaks in an indecipherable language that Superfly calls "vermin".

Others

The Secret Hire (UNMARKED SPOILERS)

The Shredder

https://static.tvtropes.org/pmwiki/pub/images/shredder_2.jpg

Cynthia Utrom: "Bring me... The Shredder."

A ninja warlord summoned to New York City by Cynthia Utrom to hunt the Turtles.

Adapted Out: The junior novelization ends before the scene with SuperDuperFly, and doesn't adapt anything past that. As a consequence, the Shredder doesn't appear at all in the book.
Adaptation Relationship Overhaul: Due to Splinter being disconnected from Hamato Yoshi in this continuity, he and Shredder have no prior connection.
Badass Normal: The brief shot of him illuminated by lightning shows that he's apparently human underneath his spiky armor, yet Cynthia seems confident that he will absolutely succeed in tracking down and capturing the Turtles despite their advantages, indicating that he's a force to be reckoned with.
The Faceless: He is merely mentioned in The Stinger with just a brief glimpse at his silhouette but Word of God is that he will show up in the sequel.
Hired Guns: Cynthia Utrom certainly seems to be treating him this way, planning to get his aid in capturing the Turtles, but given his lack of personal involvement with them, it's unclear if he would be motivated by money or the unique opportunity to test himself against them.
Lightning Reveal: While heavily obscured in shadow, the only time he is visible is when lightning strikes, perfectly emphasizing the sinister atmosphere.
Sequel Adaptation Iconic Villain: Despite being the Turtles' most iconic enemy, Shredder is almost entirely absent from the first film, with the main villain being Superfly instead. However, The Stinger implies that he'll become a major villain in the sequel.

Characters / Teenage Mutant Ninja Turtles: Mutant Mayhem

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The Turtles

Leonardo

Voiced by: Nicolas CantuForeign voice actorsAlex Villamar (Latin American Spanish dub), Álvaro Balas (European Spanish dub), Ryubi Miyase (Japanese dub)

Raphael

Voiced by: Brady NoonForeign voice actorsPato Hitch (Latin American Spanish dub), Iván Saudinós (European Spanish dub), Shimba Tsuchiya (Japanese dub)

Donatello

Voiced by: Micah AbbeyForeign voice actorsDiego Becerril (Latin American Spanish dub), Miquel Rodríguez (European Spanish dub), Yuki Sakakihara (Japanese dub)