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"But, now, you need to know who Saki, The Shredder, really is. He serves no great purpose, he fights no great evil. He is great evil. Any endeavor he undertakes, he does for his own selfish gain."

Teenage Mutant Ninja Turtles has been around since The '80s, and is a franchise full of wacky, comical evil-doers, or villains who have loved ones or morals. The following are not those kinds of villains.

All spoilers are unmarked. You Have Been Warned!

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Comic Books

Mirage comic
  • Dr. Baxter Stockman is a megalomaniacal scientist who is far worse than many of his later iterations. Stockman creates the Mousers supposedly to hunt rodents in New York City, only for him to use them to commit crimes simply because he finds it fun. Stockman threatens to topple a variety of skyscrapers across New York if he isn't paid a hefty ransom, and when his assistant April discovers his villainy, Stockman tries to have her Eaten Alive by his Mousers. Though his plan is thwarted, Stockman later returns having transplanted his brain into a robot body, which he uses to slaughter dozens of people across New York in his quest for vengeance against April and the Turtles who helped stop him. When he is captured by Donatello, Stockman allows a part of his nanotechnology to split off and cause havoc and mass death across the city in an attempt to escape, and he reveals he infected April with a painful nanovirus that will slowly kill her as his final revenge. Though Donatello spends hours trying to appeal to Stockman's humanity, he comes to the conclusion that Stockman is utterly irredeemable and will never use his genius for anything but himself.
  • Savanti Romero was once Lord Simultaneous's assistant who developed a lust for power, eventually trying to erase Simultaneous from existence. Banished to the 13th century, Savanti turns a village into his domain and attempts to use Simultaneous's time scepter to raise an army of the undead and have them slaughter all who oppose him. In the Cretaceous period, Savanti, consumed with revenge, lures Renet and the Turtles into a trap and attempts to sacrifice her as part of a spell that would cause the comet that killed the dinosaurs to miss, erasing countless lives. Savanti later appears in 12th century Japan, trying to build himself a new empire and wiping out anyone that opposes him, knowing that it would erase their descendants as well. Reappearing after a long absence, Savanti attempts to use an ancient artifact to allow him to become a god and remake creation in his own twisted image.
  • Vol. 1:
    • Issue #12—"Survivalists": Skonk is the leader of the far-right militia known as the "Committee to Rebuild American Patriotism". He felt that, because the Cold War didn't result in a nuclear war and his militia would not be able to prove their survival skills after such a event, he would try to start a nuclear war by setting off a nuke at a critical military facility. He and his militia kidnap a nuclear physics student from the University of Massachusetts and force him to create a crude nuclear bomb. The student escapes and bumps into the Turtles, warning them of the danger. Skonk kills the student with his sniper rifle. Thinking the Turtles are just people in costumes, Skonk orders his militia to kill all of them, not wanting there to be any witnesses to his plans. The Turtles easily defeat his militia underlings, so Skonk decides to return to his base and set off the nuke right away. When Splinter and Turtles try to reason with Skonk, saying he will kill countless people with his bomb, Skonk says he doesn't care, saying there are no innocents and everyone is guilty of allowing America to fall from greatness.
    • Issue #29—"Men of Shadow": Master Traquer is the leader of a vampire gang, who, after getting nostalgic about the "good old days" when vampires ruled humanity, freely killing them and draining them of their blood, allied himself with the Order of Dagon. Transforming several people into his undead zombie slaves, Traquer orders them and his gang to kidnap various ancient artifacts all around the world to use in the summoning of Dagon. Traquer intends to free Dagon to cause death and destruction all over the planet so that vampires could dominate the Earth once again, under Traquer's rule. When being told that Dagon could kill all vampires too, Traquer openly states that he doesn't care.
  • Vol. 3 issues #10-14: Johnny Lee Raeburn, from Savage Dragon, appears in this series under his moniker of "Deathwatch". Raeburn returns to Earth as a cybernetic supervillain able to feast on the minds of his victims and make them experience the terror of those he's killed, making them die in absolute fear. Deathwatch slaughters several people connected to the trial that convicted him as a child killer before single-handedly massacring his entire hometown and killing his mother, even mentally torturing Donatello into brain death before he's foiled.


  • Krang is far darker then the animated version. Working with Shredder to defeat the Turtles, the Turtles' discover the depth of Krang's evil when they fight two aliens named Wingnut and Screwloose. After the Turtles defeat them, Screwloose explains that Krang's forces invaded their home planet of Huanu, killing most of the population. Krang's forces have been going around Dimension X, destroying all life on any planet they find, searching for a powerful crystal called the Turnstone. Another former warlord from Dimension X named Cherubae has possession of the Turnstone and is hiding on Earth. Krang, feeling he needs more powerful allies to defeat the Turtles and Cherubae, contacts the insect queen Maligna. In exchange for loaning him ten of her insect warriors, Krang promises to lead Maligna to Earth, so that her insect warriors can kill the human race and colonize Earth. Krang is ultimately defeated and Cherubae uses the Turnstone to banish him to the prison planet of Morbus. Krang eventually escapes from Morbus and returns to Earth, where he graphs himself on to Shredder's body and plans to kill the Turtles and then hunt down their loved ones, not caring how much damage Shredder's body takes while fighting the Turtles.
  • Queen Maligna is the cruel leader of a race of alien insect warriors called the Malignoids. Maligna and her children seek out worlds teeming with life and consume them. Maligna is introduced when Krang contacts her, promising to lead her to Earth, if her warriors defeat the Turtles. After Krang's defeat, Maligna comes to Earth and begins her invasion. She sends eggs to Earth; these eggs contain larva which devour everything in their path. She also sends pods to Earth, containing more adult Malignoids, who will attack everything in sight when they hatch. Maligna also has a habit of eating her own children, devouring one of her Malignoid warriors after he successfully completed a task for her. Maligna captures Raphael and Mondo Gecko, planning to have them fattened and dipped in honey, so she can devour them in a feast later. After the Turtles and their allies defeat her children on Earth, Maligna sends her armada of space ships to destroy everyone on Earth. Maligna is eventually defeated and vows to leave Earth, but later says she will return when they least expect it. Maligna returns much later, after her ally Mr. Null kills the Mighty Mutanimals, removing several of the heroes who opposed her off the board, planning to finish what she started and destroy the human race.
  • Mr. Null was introduced as an unseen tycoon, who enslaved a remote South American tribe to work in some of his mines and tries to dump toxic waste into the ocean. However, we soon discover that Null is actually a demon and has sold the Earth to Queen Maligna and her hordes of insectoid aliens, who plan to destroy humanity and colonize Earth. After the Turtles and their allies the Mighty Mutanimals thwart this alien invasion, Null seeks revenge on them. Null takes control of the Horsemen of the Apocalypse and captures the two groups. Null is planning to make the female members of the Mutanimals into his harem, while the others will be slowly electrocuted to death. Null plans to force Kid Terra, one of Null's former underlings who turned against him, into pulling the switch that electrocutes his enemies, wanting to torment his former employee. After this scheme is thwarted, Null later returns and hires some cyborg assassins, who manage to kill most of the Mutanimals. Null decides to torment Candy Fine, who the girlfriend of Mutanimal Mondo Gecko, by showing her images of the Mutanimals burning in hell. Null then mind-controls her and makes her into his slave. Null had the Mutanimals killed so he can continue what he started, trying to help Maligna destroy the human race. When asked why he does what he does, he responds that death and destruction are his "favorite things, the things [he does] best".
  • Issues #62-66: Crainiac is the main villain of the "Dreamland" arc, set in a future where the world has been ravaged by Global Warming. Crainiac, a mercenary who works for extradimensional aliens who cannot dream, heads to Earth to steal brains to sell to his alien clients to help them dream. Crainiac also knows that an asteroid is heading towards Earth, which would destroy all life on the planet, but has no intention of stopping it or warning anyone, taking pleasure in Earth's coming destruction. Crainiac teams up with another villain named Verminator-X and steals brains from dead bodies, turning them into zombies that he orders to gather more brains for him, not caring who the zombies kill in the process. It is later revealed that the zombies are in pain and wish for death, one begging the Turtles to kill him. Later Crainiac kidnaps Leonardo's students, planning to steal their brains.

IDW comic

  • Batman/Teenage Mutant Ninja Turtles III: Crisis in a Half Shell: Krang is an Utrom warlord and one of the sworn enemies of the Turtles. Discovering the existence of the Omniverse, a collection of different multiverses, Krang decides to destroy it and create his own multiverse out of its parts. To this end he tracked down the Anti-Monitor from Batman's multiverse, killed him and used him as his new body. Creating his Ultra-Technodrome from the parts of Batman's universe, Krang finds the original versions of Batman and the Turtles and captures them, using them to forcefully merge the entire Omniverse into two universes, Dimension X and New Earth, erasing all the rest. When the Turtles and Batman find out about this and started thwarting Krang's schemes by trying to separate their multiverses once again and restore the Omniverse, an angry Krang tries to destroy the whole Earth, so he could rebuild it again, only without the heroes.
  • The Last Ronin:
    • Oroku Hiroto, also known as Shredder 2.0, is the grandson of Oroku Saki and the latest to bear the title of Shredder. A treacherous, cruel tyrant who helped to annihilate the Hamato clan, Hiroto frequently maims, tortures, and kills his own men, as well as innocent civilians who are subjected to Martial Law with the thread of mass execution. Seeking to annihilate the last shreds of hope, Hiroto gives orders to slaughter any in the city who disobey his edicts, before revealing he kept his mother alive in cryogenic stasis simply to prove his superiority over her. Hiroto then murders her, before attempting to kill Michelangelo as well.
    • Baxter Stockman is an utter sociopath who is just as responsible as Hiroto for the Bad Future. In his mad quest to capture Professor Honeycutt and experiment on him, Stockman killed several of the Turtles' allies before using bombs to murder Leonardo and Casey, crippling April in the process. Allying with Hiroto to serve his own ends, Stockman creates the "Synjas", horrifying human-robot creations enslaved to Hiroto's will, and further outfits Hiroto's army with advanced weapons and technology. Stockman is happy to empower Hiroto's awful dystopia so long as he can run his experiments, and when the freedom fighters try to shut down Stockman's tech across the city, he attempts to massacre them all with smug satisfaction.
  • Mighty Morphin Power Rangers/Teenage Mutant Ninja Turtles II: General Krang is a vicious alien warlord seeking control of Earth. Before the series, Krang is responsible for wiping out the world of Dimension X, turning it into a barren wasteland and later killing the Power Rangers of Dimension X when they rose up against him. Krang casts out his long-time ally in Shredder to ally with Rita Repulsa in a Big Bad Duumvirate. Krang tortures Casey Jones to try and get him to comply to his will. Retrieving the members of both the Rangers' and Turtles' Rogues Galleries, Krang and Rita use them to attack Angel Cove and enslave the populace to build machines to conquer the world. Destroying the Rangers' Zords, Krang transforms the remains into a mech suit for himself to render the Earth extinct, admitting that ultimately the planet is of no true importance to him, he just wants to defeat the heroes for daring to stand up to him.

Animated Works

1987 series
  • Seasons 9 & 10: Lord Dregg is an alien warlord who, losing power after a rebellion, wants to conquer Earth and make it his new base of operations. Dregg comes to Earth and pretends to be a friendly alien who wants to improve the human race, making people see him as a hero. Despite this, the Turtles manage to thwart several of Dregg's destructive schemes, such as overloading a death ray Dregg was building to start destroying cities until the Earth bowed to him. Dregg's true intentions are later revealed when confronted by a more powerful warlord named Doomquest. Beaten, but not defeated, Dregg launches his main henchman HiTech into space in a shuttlecraft for failing him. Dregg tries to turn Leonardo into a walking nuclear bomb and having him blow up NYC; plans to teleport parts of the Sun to Earth if they do not accept his rule; and tries to suck the Earth into a wormhole and teleport it to a solar system he still controls. Dregg disposes of Mung and hires 5 powerful mercenaries to help defeat the Turtles, but uses a powerful exoskeleton to absorb the mercenaries, taking their powers and killing them in the process.

2003 series

  • Various incarnations of the Shredder are among the worst in the entire franchise:
    • Ch'rell is a villainous Utrom, responsible for various crimes throughout the galaxy, including causing war on other planets which resulted in millions of lives lost. Captured by his normally-peaceful people, he caused their ship to crash on Earth, stealing the identity of the late Oroku Saki, aka The Shredder. Founding the Foot Clan, Shredder spent ages hunting down the Utroms and continuing his plans for galactic conquest. Upon finding the home of the Utrom's guardian, Hamato Yoshi, Shredder personally murdered him for refusing to give their location. Shredder's further crimes in the series include kidnapping random citizens to be turned into monsters for slave labor; executing a Purple Dragon member for failure; and stealing the anti-gravity generator left in Beijing from the Triceraton invasion, ignoring Karai's protests that doing so will result in millions of deaths. Constructing a ship that will help him find the Utroms, he assaulted the Turtles and Splinter to near death for continuously interfering with his plans, then assaulted Karai for trying to stop him. After being imprisoned for his crimes, Shredder is eventually freed by an alternate world counterpart. Taking control of the Technodrome from his saviors, Shredder learns of The Multiverse and goes mad at learning of other Ninja Turtles. He decides to find the Prime Universe to kill those Turtles, believing that will erase all Turtles from existence. His assault on that universe world erase all others from existence, but he does not care that this would include his own daughter—or even himself—deciding his revenge is more important.
    • "Same As It Never Was": Ch'rell proves to be worse than ever. Taking over his own homeworld and brainwashing all Utroms to be his slaves, Ch'rell leads his army to conquering Earth, building an oppressive regime there, as he forces people to work 18 hours per day and kills anyone who dares to rebel against him. Having murdered countless members of the resistance, Ch'rell plans to use a colossal teleportation device to send his armies to many worlds, intending to spread his rule across the galaxy.
    • Season 5: The Tengu/Demon Shredder is the original Oroku Saki, the master of the Foot Mystics, and is regarded by the Turtles as one of the greatest evils they've ever faced. Once a great warrior who betrayed the Dragons to merge with a powerful demon, Oroku Saki became the Tengu Shredder as he wreaked havoc on Japan and killed countless people. Though he was sealed away before he could wage war on the entire planet, Tengu Shredder's influence leads the Foot Mystics to further crimes as they work to resurrect their master. Upon being freed by the Mystics—whose loyalty he repays with regular torture and abuse—Tengu Shredder carves a path of destruction through New York simply to soak in the destruction and agony of citizens. Tengu Shredder's ultimate goal is to cover the world with his demonic magic and bring Hell on Earth where nothing but chaos, pain, and suffering exist as the undead roam the planet. Tengu Shredder tries to solidify his reign by attacking Karai for being a pretender to his name, and though he entertains the idea of making her his slave, he instead brutally beats and seemingly kills her in front of Dr. Chaplin simply because he knows they have affection for one another.
  • "H.A.T.E.": Skonk is a xenophobic leader of a small terrorist group called Humans Against The Extraterrestrials, or H.A.T.E. Thinking that New York is a source of alien activity, Skonk created a thermonuclear bomb and plans to smuggle it in to the middle of New York City, so that Skonk can detonate it there and destroy a large portion of the city, along with hundreds if not thousands of innocent people in it. When one of the members of his group started having troubles with the plan and tries to quit, Skonk ordered the rest of the group to hunt him down.
  • "The Darkness Within": The "Necro Monster" is a creature who arrived on a meteor and proceeded to act as The Corrupter. Among those corrupted was a C.F. Volpehart, who the creature used to wipe out a native tribe who couldn't be corrupted; Volpehart was forced to be the creature's immortal servant. The creature has been doing this for centuries. In the present, when the Turtles must rescue their young friend Angel's older brother, they see thousands of pods of the creature's victims. The creature also tries to use his methods of Mind Rape and I Know What You Fear on the Turtles, before Leo manages to defeat the creature.
  • "Time Travails" & "Return of Savanti" two-parter: Savanti Romero is a former apprentice of Lord Simultaneous, who was turned into a demon for attempting to steal the Time Scepter and imprisoned in medieval ages. Plotting to take control of the Time Scepter, Savanti managed to lure the current apprentice of Lord Simultaneous, Renet, and intended to take away the Time Scepter from her, so that he could kill Lord Simultaneous and take over the universe. After being defeated by the Turtles and Renet, Savanti was imprisoned in prehistoric times, where he planned his revenge. Managing to once again lure the Turtles and Renet to him, Savanti plans to use Renet's life as a power source, so that he could change history and destroy the Turtle's timeline, erasing humanity from existence and the Turtles along with them.
  • "Trouble with Augie": The Councilor is the leader of the lizard race known as the Brotherhood, a race of interdimensional conquerors known for eating entire species. Years ago, the Councilor led his people in the complete slaughter of the Zodats. After the Zodats destroyed their teleporter as a last resort to stop the Brotherhood, the Councilor tricks Professor August "Augie" O'Neil into repairing it under the illusion of being a peaceful race. When April and Donatello reveal it's an act, the Councilor forces Augie to finish fixing the teleporter, with plans to do to the human race what he did to the Zodats. The Councilor's final act is to abandon his army to die and try to escape his impending death.

2012 series

  • Kraang Prime is a demented, relentless Utrom scientist and the main antagonist for the first three seasons. After being exposed to mutagen, Kraang Prime developed psychic powers and used said powers to brainwash millions of peaceful Utroms, renaming them all "The Kraang". Seeking to conquer the universe, Kraang Prime used the Kraang to invade or destroy planets before targeting Earth. Kraang Prime then spent thousands of years experimenting on and torturing human beings in an attempt to terraform Earth into another Dimension X. Using New York City as a petri dish, Kraang Prime repeatedly attacked and tried to turn the city into a giant colony of mutants, and eventually succeeded and transported millions of mutated citizens to Dimension X. Kraang Prime later tried to mutate the entire planet with a giant missile full of mutagen; after this attempt failed, Kraang Prime tried one final time to Take Over the World with the remaining Kraang soldiers.
  • "The Outlaw Armaggon!": Overmind is a malicious AI convinced of his own superiority, who overthrew and killed off most of his factory's crew upon gaining sapience. When reactivated by the Bounty Hunter Armaggon, Overmind immediately overrides Professor Honeycutt's mind to assume control of his body and attempts to forcibly roboticize the Turtles and their friends. Eventually, Overmind betrays even Armaggon, revealing his plan to use an army of Warbots to wipe out all organic life across the galaxy and pave the way for Overmind's own technological rule, trying to simply kill Honeycutt and the Turtles when they stand in his way.
  • "The Curse of Savanti Romero" through "Monsters Among Us": Count Dracula, as vile as ever, is an evil vampire who killed thousands, if not millions, of people, to the point where his basement is littered with skeletons. In order to gain more minions, Dracula has his werewolves attack and bite victims; one of them is Raphael, who Dracula uses in an attempt to lure his brothers to his castle and kill them. During battle with the Turtles, Dracula attempts to bite the neck of Esmeralda, daughter of the werewolf Vulko, and turn her to his side. After joining Savanti Romero out of fear for his life, Dracula manipulates Igor into helping them create Frankenstein's Monster and manipulates both of them into joining forces with them. Dracula causes mass chaos in New York City, having his werewolves bite and brainwash victims into being his servants. After betraying Romero and brutally murdering his minion, the Mummy, Dracula attempts to take over all 10 dimensions and turn everyone into vampires, eradicating humanity from existence.

Rise of the Teenage Mutant Ninja Turtles

  • The Shredder, unlike most incarnations, is actually a demon residing inside of the Kuroi Yōroi. After Oroku Saki made a deal with an oni and was given indestructible armor, the demon within the Kuroi Yōroi possessed Saki, corrupted his body, and trapped his soul within the armor while the demon used its new body to cause wanton destruction throughout Japan. After being dormant for hundreds of years, the Shredder returns in the present after the armor is reconstructed; the Shredder wastes no time attacking various public venues and nearly killing countless civilians. When the Shredder gains full sapience in the finale, the Shredder immediately goes after Karai, mortally wounding her and stealing her power in an attempt to become immortal. Having only gained a fraction of the power, the Shredder later takes Baron Draxum and Master Splinter captive, forcing the former into exposing his stash of Empyrean so the Shredder can use the substance to achieve full power and unleash its fury across the world.
  • The Movie: Krang One is the brutal, unfettered leader of an alien race that assimilates and destroys planets. Krang One was exiled from Earth before the series began by a group of warriors who stopped his plans for Earth. Released in the present, Krang One sets about trying to transform and assimilate the Earth into his domain, even succeeding in a Bad Future. Forcefully and painfully transforming his minions, the Foot Clan, into mindless soldiers, Krang One uses them to begin a wave of destruction and death all across New York. Krang One mentally tortures Raphael and later molds him into his pet soldier to have him fight his brothers. Krang One later reveals that his ultimate goal is to spread across and assimilate the entire universe to make it his kingdom. Taking immense glee in others suffering, with the belief that the strong exist to devour the weak, Krang One stands as one of the Turtles' darkest and most serious foes.

Batman vs. The Teenage Mutant Ninja Turtles

  • 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 virus, 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.

Video Games

  • 2003 game, Battle Nexus, & Mutant Nightmare: Ch'rell is a dangerous Utrom criminal who is responsible for many atrocities across the galaxy. Starting his rampage from burning down his hometown on his own planet and killing everyone in it, Ch'rell acquires an army and starts launching attacks on several planets. First he attacked the planet Enethone, killing over a million people, before inciting and funding a civil war on Eno II in an effort to mine their raw minerals without restriction, resulting in the deaths of over three million people. When he got captured and was sent to a spaceship for trial, Ch'rell sabotaged this ship, forcing it to land on Earth, where Ch'rell, with the help of an exoskeleton, blended in with the human population and started to build his own criminal empire by burning villages in feudal Japan and terrorizing the locals. In the present, Ch'rell, authorizing painful experiments on dozens of innocent people, hoped to build his own spaceship, solely so he could hunt down every Utrom on his own homeworld.
  • Mutants in Manhattan:
    • General Krang is a ruthless Utrom from another dimension who is bent on the genocidal conquest of Earth. Planning to free his whole army from another dimension to cause death and destruction all over the planet, Krang enters in an alliance with Shredder, hoping that Shredder will distract the attention of the Turtles long enough for him to build the giant portal to his dimension on Earth. Succeeding in building a portal and freeing his army, Krang enters his giant robotic body and calls himself Mega Krang, as he commands his forces to kill and destroy everything they see, setting the whole of New York City on fire.
    • Oroku Saki, better known as the Shredder, is the leader of the powerful ninja Foot Clan, who enters in an alliance with Krang, in reality having his own goals in mind. Distracting Turtles from Krang, Shredder has his clan set bombs at several location in New York city, endangering countless innocent lives. When the Turtles manage to defeat Krang and banish him back to his own dimension, along with his army, Shredder uses his technology to keep the portal open and turns it in to his own weapon of mass destruction. Revealing that this was his plan all along, Shredder plans to destroy New York City with his new weapon, solely to intimidate the world into bending to his will.

Live-Action Films & Unproduced Scripts

  • 1990 film & The Secret of the Ooze: Oroku Saki, the Shredder, is the mysterious, hateful leader of the Foot Clan, using it to satisfy his own greed and vengeful goals. Years ago murdering the object of his affections, Tang Shen, and the man she loved to sate his own jealous rage, Shredder lured dozens of troubled youths to join his Foot Clan by preying on their need for a family and turning them into criminals, all while uncaring of their well-being and subjecting them to harsh beatings as part of their daily lives. Capturing and torturing Master Splinter to gain info on the Ninja Turtles, Shredder orders the rat killed before trying to murder his surrogate turtle sons as well, claiming he will spare one of their number if the rest surrender, only to try to kill them all anyway. Returning in the sequel, Shredder forces Professor Perry to create the mutant beasts Tokka and Rahzar, threatening to execute all three of them for failure when the monsters have the minds of "stupid infants" before bragging plans to unleash Tokka and Rahzar onto Central Park and endanger countless people. When his plans are foiled, Shredder takes an innocent woman as a hostage, threatening to douse her in mutagen and monstrously transform her while he makes his escape.
  • 2014 film & Out of the Shadows:
    • Oroku Saki, aka the Shredder, is a powerful leader of the mysterious organization called the Foot Clan, who terrorized the streets of New York City for many years. Having killed at least 32 people, Shredder, along with his adopted son/subordinate Eric Sacks, comes up with a scheme of developing a mutagen, which is capable of curing all toxins, solely so Shredder could infect the whole New York City with a flesh-eating toxin and kill countless people, while Eric Sacks would cure New York for a price. When the Turtles started meddling with his schemes, Shredder ordered Karai to take the entire subway tunnel worth of people as hostages and put bombs in it, solely to draw the Turtles out of the shadows. As the Turtles managed to stop the mechanism from releasing the toxin, Shredder tries to throw the toxins in the streets manually, on the heads of hundreds of people below the tower. After escaping from prison and making an alliance with Krang, Shredder helped him build the giant teleportation device, willing to sell out all Earth and humanity in exchange for power.
    • 2014 film only: Eric Sacks is a successful businessman in public and a high-ranking member of the Foot Clan in secret. Helping Shredder to develop a mutagen for their plan, Eric killed the father of April O'Neil, which Eric gloated about to April herself several years later, when he set the lab on fire. Discovering the existence of the Turtles and their lair, Eric notified Shredder, and after getting his hands on the Turtles, he tries to drain all the mutagen from the Turtles, slowly killing them. Revealing to the Turtles their Poison and Cure Gambit, which would kill thousands, Eric gloats about becoming "stupid rich" selling a cure and then has one of the Foot Soldiers infected with these toxins, solely to show their effect to the Turtles.
    • Out of the Shadows only: Commander Krang is an alien warlord from another dimension, who allied with Shredder to help him build a powerful teleportation device, so he could bring his Technodrome to Earth to cause death and destruction all over the planet. When Shredder succeeded, Krang with glee revealed to him that he never planned on sharing power and then freezes Shredder to add to his "collection" of dozens of creatures. Preparing to obliterate New York with his powerful weapons, Krang intends to raze the whole world, viewing Earth as nothing more than his toy to play with.
  • The Blue Door:
    • Colonel Schrader is an alien from Dimension X who serves Krang. Masquerading as the human leader of the Foot, Schrader, knowing that the Turtles are destined to defeat Krang, starts Project Aries with the goal of killing them. With Project Aries, he has humans kidnapped and turned into mutants for Krang's army, having done so for 17 years, ordering his test subjects killed when he feels he's finished. Later kidnapping the Turtles and torturing them, Schrader hunts down the Turtles once they escape. Making sure Krang's plan to merge both Dimension X and Earth comes to fruition, Schrader turns on his human superiors and guns them down while the Technodrome charges up.
    • Krang is the dictator of Dimension X, and Schrader's master. Ruling the dimension for 20 years and crushing anybody who tries to stop him with his army, Krang, after hearing that the Turtles are destined to kill him, murders their parents in retaliation. Preparing the Technodrome to annihilate the rebel fighters, Krang sets out to merge Dimension X and Earth together to power up his weapon, sending his men out to acquire four orbs across the world by killing their guardians. The portal ends up creating countless natural disasters around Earth that kill thousands, Krang uncaring for the lives lost. Successfully merging the two worlds together, he later brags to Leo about murdering his father before trying to kill the Turtles himself.