- Ancient Conspiracy: The Foot Clan was founded by the Shredder during the times of Medieval Japan. Since then, the organization has accumulated massive resources, which it uses to achieve its goals.
- Avenging the Villain: The Foot are honor-bound to avenge the death of the Shredder, but agree to void the blood debt if the Turtles assist in bringing order to the New York branch.
- Breaking the Fellowship: Over the course of the series, many members begin to leave the Foot. At the end of Season 3, both Hun and Baxter Stockman leave the Foot and proceed to work with the Purple Dragons and Earth Protection Force respectively. After Season 5, it's also implied that Karai and Chaplin also leave the Foot as they are no longer present in Back to the Sewers and even fight against The Remnant forces of the Cyber Shredder. Subverted in Turtles Forever, where Karai and Hun rejoin the Foot when Ch'rell gets freed from his imprisonment.
- Conservation of Ninjutsu: Ridiculously prone to this.
- Cyber Ninja: The Cyber Foot Ninjas from Back to the Sewers.
- Faceless Mooks: The rank and file ninja have virtually no defining characteristics.
- Leitmotif: A sinister melody played on Japanese instruments is generally used to cue their presence.
- Ninja: They're generally ninjas, trained by Shredder.
- Offscreen Villain Dark Matter: Seems to have accumulated massive resources over the years, using it to fund its various operations, genetic research and robotics research. As the Foot Clan is reduced to The Remnant in Back to the Sewers, it has lost its immense power, however.
- The Remnant: Are seemingly reduced to this during the 7th season, as they display none of the massive resources they had in earlier seasons. During Seasons 1-5, the Foot frequently used vehicles, mecha and scientifically created mutants. In Back to the Sewer, all that remains are Khan, a bunch of Foot Ninja and a digital clone of the Shredder. To add insult to injury, even Karai and Chaplin turned their backs to the organization.
- The Syndicate: The Foot Clan has a large influence on the New York criminal underworld, having many criminal operations and immense power over many criminals, to the irritation of other criminal organizations. As soon as the Foot gets weakened, a massive gang war is fought over the control of New York.
- Sigil Spam: The Foot seems to really like putting its logo everywhere: on Shredder's headquarters, on the Foot Ninjas, in its illegal and legitimate operations. The logo usually serves as a Wham Shot, indicating that whatever is happening, the Foot is in some way involved.
The Shredder / Ch'rell / Oroku Saki
Voiced by: Scottie Ray
The leader of the Foot Clan, who works on various criminal operations. He's by and large the most personal nemesis of the heroes, and the most recurring one.
- Adaptation Origin Connection: He's one of the main reasons the ship carrying him crashed on Earth, and thus ended up playing an indirect part in creating the Turtles and Splinter, his greatest enemies.
- Adaptational Badass: He's capable of defeating the Turtles with ease, to the point they stay out of his league for a long while, in which he finally starts relying on augmented armors in fights, which help him against Splinter. He's also the one with the title that lives the longest.
- Adaptational Villainy: While the Shredder is not a good guy by any stretch in any continuity, the Utrom Shredder is by far and away the most vile incarnation of the character in the history of the entire franchise — after all, no Shredder can ever top nearly destroying all of reality itself.
- Adaptation Species Change: The only incarnation of the Shredder, as far being the Shredder that the Turtles consider their Arch-Enemy, who was never human.
- Apocalypse How: In Turtles Forever, he accidentally starts an Omniversal Annihilation when he tries to erase the Turtles from existence by destroying the "prime" team. He's actually breaking apart the whole multiverse due to destroying the genesis point of the franchise itself - the original 1984 Mirage comic book. Of course, by this point he's so obsessed with revenge that he just doesn't care.
- Arch-Enemy: He's the one that has most actively attempted to murder the Turtles, being part of the reason they came into existence to begin with. When he returns in Turtles Forever, his hatred for them has become so strong that he can't even stand the idea of different versions of the Turtles existing in other dimensions.
- Attack of the 50-Foot Whatever: In Turtles Forever, thanks to the technology from the Technodrome, he turns into a giant.
- Authority Equals Asskicking: He is a leader of the Foot Clan and he is the most dangerous of them.
- Ax-Crazy: He is a crazy intergalactic terrorist who is responsible for millions of lives lost across the universe.
- Badass Baritone: Thanks to Scottie Ray's voice acting. God bless you Mr. Ray.
- Badass Boast: Quite a few, honestly, and that's not just the above quote:Shredder: "Like the Phoenix, I have risen from the ashes! And into my fire, you shall fall."
Shredder: Ahh, the power... I had almost forgotten. The Sword of Tengu! The sword with which I laid villages to waste, brought castles to ground, vanquished armies! The sword that I used to conquer Japan, and give power to the Tokugawa clan! IT IS MINE ONCE MORE!!
- Bad Boss: His first on-screen action is murdering a Purple Dragon for failing him, and frequently maimed Baxter Stockman for his repeated failures (and attempted betrayals) until nothing is left of him but his brain and eye.
- Batman Gambit: In Turtles Forever, he uses the Turtles' attachment to Splinter in order to lure the Turtles into the Technodrome, where he is able to capture them and obtain the location to Turtle Prime.
- Black Sheep: Of the race of the Utrom.
- Big Bad: Specifically of Season 1, due to most of the criminal organizations in it being connected to him, but he still provides a lot of the action in Season 2 and 3. He is also the most recurring villain in the series.
- Big Bad Ensemble: With Bishop for 3 Season.
- Big "NO!": His last words.
- Bitch in Sheep's Clothing: He initially pretends to be a good guy to get Leonardo on his side, but after Master Splinter reveals his true identity to the Turtles, he drops the charade.
- Becoming the Mask: Stole the identity of Oroku Saki/The Shredder to gain followers, but years of going by that name have made it so he refers to himself as "the one true Shredder".
- Been There, Shaped History: In "Return to New York, Part 3", he claims to have conquered Japan for the Tokugawa Clan. This was the first hint.
- Berserk Button: He has two:
- Using "his name" in vain. He was unconscious when his 1987 doppelganger and Krang found him. What woke him up was his doppelganger referring to himself as "The Shredder". He then attacked them.
- He also doesn't like being called a coward. Shown in Turtles Forever when Mirage Raphael accuses him of being afraid to face them in person.
- Boomerang Bigot: Despite being an Utrom himself, he expresses to Mortu in "Secret Origins, Part 3" his desire to wipe out all of the Utroms when he takes over their homeworld, all just to spite him.
- Catchphrase: "None of you will leave here/this place alive!"
- Cool Sword: The Sword of Tengu.
- Combat Pragmatist: Even though he has his villainous ego, in virtually every fight in the series he also brings his underlings with him no matter who he's fighting, and also he doesn't hesitate to use the weakness of the enemy to win.Splinter: You strike a wounded warrior. You have no honor.Shredder: I fight to win.
- The Comically Serious: Very rarely. A shining example occurs in "Exodus" when Chaplin is gushing over how cool it is to learn that he's actually a grotesque brain-ish alien, Ch'rell just has a blank, unresponsive and unamused look on his face.
- Composite Character: The Shredder actually being the Utrom Ch'rell in some ways makes him this series' answer to Krang, as well as Oroku Saki. While Word of God says they tried to keep that similarity to a minimum throughout the show's run, Turtles Forever takes the idea and runs with it when they merge Dimension X technology with Utrom technology, giving him a powerful molecular amplification exoskeleton that can grow to skyscraper size and transform into various weapons.
- Corrupt Politician: In his Oroku Saki persona.
- Dark Lord on Life Support:
- In his true form, he is a barely mobile brain-like creature inside a very capable robotic body.
- For an added example, following his fourth battle with the Turtles in which he was caught in the implosion of the TCRI building, Ch'rell had to stay in a Healing Vat while alien bacteria healed his wounds, with Karai having to manage the Foot till his return.
- Darth Vader Clone: His suit of armor covers him completely and gives him a borderline Voice of the Legion. He is eventually revealed to be a tiny alien in a Mobile-Suit Human, which can be seen as an analogue to Vader's actually being a limbless wreck in Powered Armor.
- Dead Person Impersonation: Ch'rell has replaced the real Oroku Saki. Oroku Saki later turns out to be more alive than expected.
- The Dreaded: Even after defeating him several times, just hearing that Ch'rell is involved in something is enough to make the Turtles nervous about their chances of survival.
- Establishing Character Moment: His first on-screen action in the series is to personally execute a Purple Dragon who failed him.
- The End of the World as We Know It: His ultimate goal in Turtles Forever:Shredder: It seems like branches hanging off a single tree, each of these dimensions sprang from a common source, destroy the source, and you would set off a chain reaction that would destroy Ninja Turtles everywhere, Forevermore!
- Enemy Mine: During the "Return to New York" arc in Season 1, when Baxter Stockman betrayed him and attacked both him and the Turtles, threatening everyone. The Turtles and Shredder briefly join forces to defeat him before resuming their battle.
- Even Evil Has Loved Ones: He seems to hold genuine concern for his adoptive daughter Karai. Until she refused to let him kill the Turtles. A deleted scene in Turtles Forever showed him briefly hesitating when he turned to Karai's cry of pain, but any remaining love for her was outweighed by his hatred for the Turtles.
- Eviler Than Thou: Predictably proved to be this to Krang and his 80s counterpart.
- Evil Laugh: Very prone to this.
- Evil Mentor: To Karai.
- Evil Sounds Deep: He has a nice deep voice with a Japanese accent, which, while wearing his armor, sounds like it echoes robotically.
- Evil vs. Evil: In Season 3 against Bishop. The first episode of Season 7 has him fighting against the other Shredders.
- Family-Unfriendly Violence: Ch'rell holds nothing back in his fight with the Turtles. This is more noticeable in the final battle in Season 3. He electrocutes Splinter so badly that most of his fur burns, kicks Mikeys leg out of place, delivers a serious chop to Donnies neck, and nearly breaks Raphs back. He also kicks Leo into Karais sword, impaling him and causing permanent damage to his shell.
- Fatal Flaw: No matter which universe Shredder is from, the one constant is his massive ego.
- Faux Affably Evil: Mostly in his Oroku Saki persona he employs in Season 3. His efforts to charm the mayor and the city genuinely work to hide the fact he's an omnicidal maniac.
- Fiction 500: There does not appear to be any limit to his or the Foot Clan's money. The only thing that raised any financial concerns was funding the reconstruction of New York City, which he didn't hold back due to it being a cover for his plan to leave Earth.
- Final Boss: Serves as this for Turtles Forever, the Grand Finale of the series.
- Flunky Boss: This version almost always has some goons the Turtles have to fight through first before engaging him. In fact, almost every fight with him on his terms has him either using Foot ninjas to wear down the enemy before he arrives, or to distract them so he can launch surprise attacks.
- Foreshadowing: Shredder's Been There, Shaped History speech and still being alive despite being decapitated by Leonardo hint that he's not exactly human.
- Galactic Conqueror: In the bad future, Shredder has taken over the Earth and rules the planet with an iron fist. His next goal was to build a Transmat device so he can spread his dominion to the stars, enslaving one world after another.
- Go Mad from the Revelation: He's never been a fully adequate person, but he fully goes insane after learning of the multiverse. Or more specifically, that each alternate universe is home to its own group of Ninja Turtles.
- Hate Sink: Even before he took on the identity of Oroku Saki, Ch'rell is responsible for millions of lives lost across the universe in his quest for being an intergalactic conqueror. As the Shredder, he murdered Hamato Yoshi, mutated innocent people into monsters to dig for the Utroms' hideout, then chose to abandon them when they find nothing, killed a member of the Purple Dragons for failure and eventually assaulting his adopted daughter for refusing to let him kill the Turtles. And when it came to his revenge in Turtles Forever, he was willing to let all of creation die if it meant killing off every Ninja Turtle in the multiverses. There's a reason, even during his absence, he was the Turtles' most hated foe.
- Hero Killer: Peaked with his assassination of Hamato Yoshi.
- Hijacked by Ganon: If there's a large-scale conflict in the series, he's most likely going to take center stage by the end of it, usually resulting in a Mêlée à Trois.
- Hoist by His Own Petard: He is eventually killed by his own Technodrome's laser, courtesy of Bebop and Rocksteady, who he had allowed to serve him only because "they're amusing".
- Human Popsicle: He was banished to the ice asteroid belt of Mor Gal Tal at the end of "Exodus, Part 2" after being found guilty by the Utrom council. And he was found frozen in ice and freed by 1987 Shredder in Turtles Forever.
- Hypocrite: In Turtles Forever, he complains about the 1987 Shredder using "[his] name" in vain, when Season 5 indicates that Ch'rell used the name and title of the real Oroku Saki.
- I Have Many Names: Has taken various identities long before his arrival on Earth. Torrinon, Kako Naso, Duke Acureds, then Oroku Saki and The Shredder.
- It's Personal: This became such to the Turtles after they and Splinter help the Utroms escape:Shredder: You! You freaks have been little more than thorns in my side, but now, you have robbed me of my triumph! And for that, you shall pay with your lives!
- Joker Immunity: Is seemingly killed multiple times; first from Splinter dropping a water tower on him, then when Leonardo cut off his exo-suit head, then from being left behind in the TCRI building with a bomb that destroyed it without leaving a trace behind. Unlike his other appearances, this one didn't reveal his was still alive, but the Turtles still had doubts he was dead. Sure enough, he did survive and was just in hiding. Being stuck on a freighter that was blasted to pieces might have killed him if Karai hadn't fished him out of the sea. Even after "Exodus" when advertisements promised he would be Put on a Bus for good after he was banished to an ice asteroid, he still returned in Turtles Forever. While Killed Off for Real then thanks to it being the show's finale, there's still doubt among the Turtles that he's truly gone.
- The Juggernaut: After becoming a giant in Turtles Forever, nothing short of the Technodrome's laser can do any real damage to him.
- Killed Off for Real: After many returns, he finally dies in Turtles Forever, courtesy of Bebop and Rocksteady. Bebop. And. Rocksteady. No, seriously. Given his track record, only the fact that this is the Grand Finale gives it any weight even Splinter and Karai note that they don't doubt the possibility of him surviving.
- Kingpin in His Gym: He gets a training scene in the episode "Darkness at the Edge of Town".
- Klingons Love Shakespeare: While he'll never admit it openly, the Shredder enjoys Japanese culture. He is seen sipping tea even if he doesn't need to. He also keep various memorabilia from Feudal Japan.
- Knight of Cerebus: A clear sign that an episode will get darker? Seeing the Shredder get involved personally.
- Know When to Fold 'Em: In "Exodus", after his spaceship is done being built, he plans on just leaving Earth to get his revenge on the Utroms, without even attempting to tie up his loose ends with the Turtles. He does, however, hint that he'll come back after his business with the Utroms are finished.
- Large Ham: Especially when he wears his armor.
- Legacy Character: Ch'rell based both of his identities on ancient Japanese legends of a Tengu demon called the Shredder and the warrior Oroku Saki who defeated him (but in reality, he fell into evil and they merged, and the Turtles later face this Shredder). Ch'rell's Shredder was one to the Tengu Shredder (albeit unknown to the latter), and later after he's exiled off Earth, he becomes one himself to the remaining Foot.
- Leitmotif: A dramatic orchestral piece tended to signal his arrival, while a more low-key and sinister theme would be used in non-action contexts. Both themes often made use of a stock Kabuki yell for the climax.
- Make My Monster Grow: In Turtles Forever, he grows to an incredible size in order to wipe out The turtles of the Mirage universe; Krang then enlarges himself and his robot as well, in order to fight this Shredder on equal footing, but is cut down in no time.
- Make Sure He's Dead: In "Tales of Leo", the Foot attack April's apartment, which leads to the building burning down. Recalling that the Turtles had automatically assumed him dead without bothering to be sure, Shredder is unwilling to make the same mistake and sends Stockman to the remains of the building to find proof that the Turtles died in the blaze; Stockman is unable to find any evidence, since the Turtles managed to escape, but fearing the consequences of returning empty-handed, he forges some.
- Mobile-Suit Human: He's almost always in one of these.
- Motive Decay: In most of his appearances in series after The Reveal, including all of Season 3, his goals are to get back to space to rebuild his empire and get revenge on the Utroms who imprisoned him. He considered the Turtles little more than an inconvenience and was willing to leave Earth in his space ship without even finishing them off. However in Turtles Forever, he learns that there are Ninja Turtles in every universe. And the entire purpose of his entire existence is to be foiled by those Turtles. This leads him to conclude that so long as there exists a team of Ninja Turtles, they will always disrupt his plans. So in the end he decided to kill all Ninja Turtles in all worlds, even if it will be at the cost of his own existence.
- Multi Layer Facade: He's got a public identity which is Oroku Saki, the rich and well respected Japanese businessman. Then he's the Shredder, a warlord who is using his public persona to gain power. And then his true identity originally only known by his adoptive daughter Karai is Ch'rell, an Utrom criminal who has been on Earth for over a millennium.
- Multiversal Conqueror: The Shredder's original plan before learning of the Ninja Turtles in each and every universe. Eventually turns him into an Omnicidal Maniac.
- Near-Villain Victory: Several times but closest in Turtles Forever when he almost kills the 1984 Turtles, thereby insuring Universe wide Turtlecide, but he's done in by Exploding Throwing Stars, his ego, and Bebop and Rocksteady.
- Non-Standard Character Design: In his Utrom form, he is colored blood-red (as opposed to his species' normal pink appearance, except for a yellow one), has a purple scar over his left eye and three horn-like protrusions on each side and the center of his head. This is to distinguish him from the other Utroms.
- Offing the Offspring: He tried to kill Karai for refusing to let him kill Splinter and the Turtles.
- Off with His Head!: He gets this treatment after the Turtles storm his headquarters. He lives, because it's a robot suit.
- Omnicidal Maniac: Turtles Forever, where he's willing to destroy the entire multiverse, including himself, if it meant killing all existing Ninja Turtles. That includes his own daughter.
- Out of the Inferno: The Shredder literally walks through fire after the building he's been fighting with the Turtles on collapses during their first fight, causing Michelangelo to remark:Michelangelo: "He's like the Shreddernator or something."
- Pet the Dog: Downplayed. While he can throw it away at a moments notice, he seems to have some level of affection toward his higher level lieutenants; he personally raised Karai, trained Hun, rarely ever significantly punished them, and they're the only ones he listens to. He also respected the power of the Foot Mystics, which they reciprocated to some extent, even when they thought he was an "abomination".
- Put on a Bus: He gets imprisoned on an asteroid in the endgame of Season 3, and doesn't show up again aside from cameos in Fast Forward and Back to the Sewers, until Turtles Forever.
- Really 700 Years Old: Due to being an alien.
- Revenge Before Reason: He comes to hate the Turtles so much that he'd rather destroy them and destroy the entire multiverse, including himself and his daughter Karai, than let them live.
- Secret Test: He sets his Foot Ninja on Leo when he arrives to test Leo's skill first hand.
- The Sociopath: Arrogant, remorseless, vengeful, cold and ruthless, he will do anything to destroy his enemies.
- Spikes of Villainy: Especially in his latter bodies.
- Stealth Pun: In the bad future, the Shredder is destroyed by the Turtle Tunneler, that is to say, shredded.
- Suicidal Cosmic Temper Tantrum: This is what his ultimate doomsday plan in Turtles Forever boils down to; after discovering The Multiverse and that there are Ninja Turtles everywhere, he decides to go straight to the source (the Mirage comics universe) and destroy all reality. Even after being explicitly told that he would die as well, he decides that it's Worth It.
- Taking You with Me:
- After being robbed of his revenge to his fellow Utroms by the Turtles, Shredder would rather die in the building's implosion with the Turtles and Splinter than let them escape.
- It got worse in Turtles Forever when he was willing to destroy the entire Multiverse to get rid of every Turtle in existence, even at the cost of both his life and his daughter Karai's, something which he refused to relent or show remorse to.
- This Cannot Be!: Very very often:
Shredder: "This cannot be happening. I cannot lose!"
- For example Shredder's reaction after Leo sends him flying with the Sword of Tengu:
Shredder: Impossible! You are not this powerful!Raph: Dude, we put the ka-bosh on ya a long time ago. You're history! (he and Leonardo kick the Shredder back to his original time period)
- Another example, in the finale of Season 3, he gets a big shock when the Utrom council finds him guilty for all the crimes he had committed across the galaxy in his many aliases, including but not limited to his Oroku Saki and Shredder aliases. He screams, "NO! You are not fit to judge me! I am the Shredder! I am invincible!" just before the Utroms give him the punishment of banishing him to his new home on the ice asteroid belt surrounding the frozen planet Mor Tal, where he does very little but let loose a Big "NO!" because he is not too thrilled to be trapped on his new home.
- In the episode "Timing is Everything", the Shredder gets a big shock when he sees for himself how much more skilled the Turtles have gotten since their first battle with him, as well as how powerful Sh'Okanabo is in overwhelming and sending his Foot Soldiers back to the Shredder's original time period.
- Tin Tyrant: While a few other Shredder incarnations come close (such as in the movies and the Nick cartoon), the armor and attitude of that one fit the trope better.
- The Unfettered: He'll do anything to get what he wants. Even if for that need destroying reality itself.
- Villain Decay: Inverted, the Shredder managed to stay a dangerous antagonist, growing more powerful to the point where the Turtles stopped being able to defeat him with martial arts alone, and always portrayed as both scarily competent and pure evil.
- Villain Forgot to Level Grind: After being defeated in Season 1. The Turtles keep getting stronger, to the extent that Leo is able to easily kick his ass by himself in Season 6, and in Turtles Forever, the Turtles are able to defeat him in a straight fight within a few short seconds. Thus, Shredder usually resorts to such things as pointing his army and elite henchmen at the Turtles, or using specialized technology like more powerful suits of armor to get the upper hand. Partially justified during the first three seasons in that although Shredder hates the Turtles, his first goal above all else is finding a way to escape Earth and get revenge on the Utroms. It's played completely straight and justified by the time of Turtles Forever because by that point, the Turtles had gotten much more experience battling the Demon Shredder, fighting their way through the future, traveling through cyber-space, and bettered themselves in countless more adventures, whereas Ch'rell was frozen on an ice asteroid during all this time and couldn't have level-grinded even if he wanted to.
- Villain with Good Publicity: As Oroku Saki, he's a rich and respected Japanese businessman, and became well-known as a hero and humanitarian after he singlehandedly funded the rebuilding of New York City after an alien invasion. It's to the extent that when he's finally defeated by the Turtles, the public builds a library in his honor.
- Villainous Breakdown: He suffers one after he discovers that Teenage Mutant Ninja Turtles exist in all universes, meaning that no matter where he goes, he'll never escape them. This causes him to go from trying to conquer the multiverse to becoming an Omnicidal Maniac and destroy it.
- Villainous Valor: Ch'rell may be a total monster, but he is willing to go down fighting against the Turtles. Sometimes it ends in his defeat but other times it also ends with him standing victorious over the Turtles.
- Walking Spoiler: His real identity.
- We Wait: Shredder acknowledges the gravity of the situation when the Earth's last effort to fight off the Triceratons fails, but decides to wait and see what arises.
- With Us or Against Us: This is the main reason the Shredder takes on the Turtles for the first time, with them having turned down his offer to join him after learning who he really was, he declared this.Shredder: "Those who are not with me are against me! And I'll crush anyone who opposes me."
- The Worf Effect: His Season 1 self is easily defeated in the Season 6 episode "Timing is Everything", where he travels to 2105 and gets his ass kicked by Leonardo. It's implied that these events are part of a Stable Time Loop which caused the Shredder to become more ruthless in his hunt for the Turtles Post-Season 1 — which would eventually lead to his final defeat. This is even subtly referenced in Turtles Forever: when he goes up against the Turtles himself in his normal armor, he's defeated in a few short seconds, causing the '87 Turtles to wonder why their 2k3 counterparts even hyped him up as being so dangerous. For the most part, Shredder either points his army and elite henchmen at them or enlarges his suit Attack of the 50-Foot Whatever-style, giving himself an unfair advantage.
- Wrecked Weapon: He literally shatters Leonardo's katana with his bare hands.
- You Have Failed Me: His usual reaction to failures of his subordinates.Purple Dragon:: I promise, sir, I won't fail you again.Shredder: I know. You won't fail me again. Ever!
Voiced by: Karen Neill
The Shredder's adopted daughter and a high-ranking member of the Foot Clan. Unlike her father, she fights with a code of honor and even grows to respect the Turtles (specifically Leo). After Ch'rell's defeat and exile in the third season finale, she takes up the mantle of the Shredder and vows to take revenge on the Turtles.
- Ambiguously Evil: Until Season 4.
- Anti-Villain: Rarely holds any enmity towards the Turtles, fighting them on Shredder's orders.
- Avenging the Villain: Her motivation for fighting the Turtles after they defeated Shredder.
- Benevolent Boss: When she takes over the Foot Clan, she treats them, especially Chaplain, quite well. This in contrast to her father whose leadership mostly consisted of harsh words and threats.
- Bad Boss: While a Benevolent Boss to the rest of the Foot Clan, she treated the Foot Mystics more along the lines of weapons and constantly ignored their opinions, saying that since she had the Heart of Tengu, they would do whatever she pleased. It didn't work that well in the long run, since this led the Mystics to turn on her to bring their true master Back from the Dead.
- The Bad Guy Wins: "Scion of the Shredder" has Karai seemingly killing Master Splinter and all but one of the Turtles (Leo), as well as destroying their lair. By the next episode it's revealed that they all survived, however.
- Broken Bird: In Seasons 4 and 5.
- Co-Dragons: After her introduction, she shares the role of The Dragon with Hun.
- Contrasting Sequel Antagonist: In Season 4, after taking the role of the Shredder, she's much more active in hunting down and murdering the Turtles, to the point that she destroys their lair and most of their vehicles in the process, rather than being as passive as Ch'rell. However, she lacks Ch'rell's cunning and her hotheaded tactics cause the Foot Mystics to respect her less than her predecessor.
- Corrupt Corporate Executive: Once she takes over her father's enterprise.
- Daddy's Little Villain: She is the Shredder's foster daughter.
- Dark Action Girl: Can usually take any one of the turtles head to head, though not all four like Shredder frequently can.
- Demoted to Dragon: Originally in the comic, Karai was a Foot Clan commander on the same level as the Shredder, sent by their mutual commanders in Japan to clean up his messes.
- Dragon Ascendant: In Season 4. After Shredder's defeat, she takes the mantle for her own.
- She re-assumes her role as co-dragon in Turtles Forever.
- Enigmatic Minion: Her loyalties before Season 4 were one of the most confusing and complex threads in the entire series.
- Evil Counterpart: To Leonardo. Both have strong senses of honor and are their masters most loyal and skilled disciple.
- Good Colors, Evil Colors: A very subtle one occurs in Season 4. Normally she wears pink lipstick, but for "Prodigal Son" she wears red lipstick, symbolizing her crossover into evil when she believed she's killed the Turtles. After Leo defeats her, the next time we see her, she's gone back to the pink lipstick, showing she's not so evil and such a threat anymore.
- HeelFace Turn: Though it doesn't happens until Season 5.
- Holding Hands: Karai does this to Chaplin at the end of Season 5.
- Hooked Up Afterwards: Karai and Chaplin, after the Season 5 finale hand-holding.
- Interspecies Adoption: Is a human raised by an Utrom (in a human suit).
- Kimono Is Traditional: In the Back to the Sewer finale, she wears a kimono to Casey and April's wedding.
- Leitmotif: A serious and low-key theme played on Japanese instruments.
- Legacy Character: She becomes the Shredder after Ch'rell is written out, though he later comes back and reclaims the title.
- My Master, Right or Wrong: This is the struggle that Karai faces in the second and third seasons with her loyalty to her adoptive father, the Shredder, clashes with her more noble instincts. One of the forms this clash takes is in her reluctance to kill the Turtles, who had agreed to help her restore the New York Foot in exchange for ending the syndicate's vendetta against the Turtles. While the agreement was made under false pretenses it was made under the assumption that the Shredder was dead and that Karai would be leading the Foot, which Karai knew was not the case she still felt compelled to keep it, despite her father's wishes.
- No, You: Karai's not very good at trash-talking. She does this several times to the Tengu Shredder.
- Red Eyes, Take Warning: When she's wearing the Shredder's helmet.
- Related in the Adaptation: She was unrelated to the Shredder in the original comics, but is his adopted daughter in this series.
- Secret Keeper: Is the only one of the Foot Clan who knows the Shredders true identity.
- Shoulders of Doom: As Shredder.
- Spikes of Doom: As Shredder.
- Tin Tyrant: When she takes over the Shredder's mantle.
- Token Good Teammate: Unlike most of Shredder's minions, she is shown to possess a code of honor and shows an aversion to Shredder's sadistic tendencies. She even develops mutual respect with Leonardo and was reluctant to fight him in the "Rogue in the House" arc.
- Took a Level in Jerkass: In Season 4, after the exile of Ch'rell. She gets better in Season 5 and only antagonizes the Turtles again when the Utrom Shredder returns in Turtles Forever. After he goes absolutely insane and tries to destroy The Multiverse in his vendetta against all Teenage Mutant Ninja Turtles, she makes a permanent HeelFace Turn and tries to stop him.
- Tyke-Bomb: An orphan found and adopted by the Shredder at an early age, he turned her into one of his most loyal and capable lieutenants. The Shredder, surprisingly enough, turns out to be a rather good parent (at least from her account) and the ensuing loyalty she feels to him is at the core of her character arc.
- Undying Loyalty: This is what prevents her from making a HeelFace Turn for most of the series. She genuinely respects the Turtles, almost has a friendship with Leonardo and knows to some extent that the Shredder's motives aren't exactly pure, but due to the role he played in her life, she feels like she owes him, and stays by his side no matter what. Even when he actually is defeated, she ends up blaming the Turtles for it and going on a Roaring Rampage of Revenge against them. Eventually, it takes the Shredder trying to destroy The Multiverse (him and her included) to make her leave him once and for all.
- Villain with Good Publicity: Much like her father, she's seen as a savior of New York after the Triceraton invasion, though she's much, much more heroic than him.
- Wild Card: Due to her sense of honor clashing with her allegiance to her father, she has worked with the Turtles as much as she has fought against them.
- Worthy Opponent: To the Turtles in general, but typically to Leo.
Voiced by: Scottie Ray
A digital copy of the Utrom Shredder's memories that were stored away until Viral, another of the Turtles' villains, tried to absorb it. Instead, the digital engram absorbed her instead, and thus the Cyber Shredder was born. He becomes the new leader of the Foot Clan Remnant and wants to escape Cyberspace.
- Big Bad: Of the final season, prior to Turtles Forever.
- Contrasting Sequel Antagonist: To the previous Demon Shredder. That Shredder was a human who merged with a demon to gain powers, this Shredder was the digital copy of an alien's mind brought to life. Both are insanely powerful, but Cyber Shredder's powers were only great due to existing in Cyberspace. Furthermore, due to being a copy of Ch'rell, this one has personal enmity with the Turtles.
- Convenient Replacement Character: He was more or less designed to be this In-Universe. In the case that Ch'rell would die or be unavailable, Cyber Shredder would be activated and act as his replacement.
- Evil Knockoff: A cybernetic copy of Ch'rell.
- Final Boss: He is the final antagonist that the Turtles face in Back to the Sewers, which is the final season of the entire series.
- Flat Character: This Shredder lacks any of notable personality traits that his predecessors did. This is justified due to him being a literal copy of Ch'rell.
- Hand Blast: In Cyberspace, he can shoot beams from his arms.
- Healing Factor: In Cyberspace, he can get split in half but can quickly heal himself.
- The Remnant: He's the leader of a group of several Foot Ninjas that pales in comparison to the clan in previous seasons.
- Sealed Evil in a Can: Played with. For the most part in Back to the Sewers, he is trapped in Cyberspace and searches for a way out, but he can still communicate with outsiders, for example Khan.
- Spikes of Villainy: His spikes are more exaggerated than Ch'rell's.
- Teleportation: In Cyberspace.
Voiced by: Scott Williams
An amoral but brilliant scientist, who worked for the Foot Clan. Due to his multiple failed attempts to betray the Shredder, he was constantly mutilated, losing his body in the process. He eventually betrayed the Foot successfully and later joined Bishop's Earth Protection Force. Due to this, he's no longer affiliated with the Foot and his page can be found here.
Voiced by: Greg Carey (Seasons 1-4, Back to the Sewer), David Zen Mansley (Season 5, Fast Forward)
A tough, hulking gangster who acts as the leader of the Purple Dragons and an ally of the Shredder. He deeply despises freaks, especially the Turtles. Hun had extreme loyalty to the Shredder, which was broken when he discovered that Shredder himself is an alien freak. After this, he left the Foot and decided to transform the Purple Dragons into a powerful criminal syndicate. Due to this, he's no longer affiliated with the Foot and his page can be found here.
Yin and Yang
Two Foot Ninja who act as the bodyguards of Karai.
- All There in the Manual: Sort of. Their names are never revealed in the series and in any official external media, though Peter Laird has suggested calling them Yin and Yang.
- Bald of Evil: It's uncertain how evil the short one is, but he's certainly bald.
- Big Guy, Little Guy: Self-explanatory. They differ in size, but both are quite intelligent.
- Bodyguarding a Badass: They are the bodyguards of Karai, who, in "City at War, Part 2", is shown to be capable of kicking both the Turtles' and Casey's butts.
- Purple Is Powerful: They are more capable than the standard Foot Ninjas and their outfits are purple.
- Use Your Head: The shorter bodyguard defeats Casey with a head-butt.
- What Happened to the Mouse?: After their appearance in "Enter the Dragons, Part 1", they are never seen again.
- You Gotta Have Blue Hair: The tall one has purple hair.
Voiced by: Sam Riegel
A young scientist who becomes the head of the Foot's science department in Season 3.
- Always Someone Better: Is this to Stockman. Stockman spends multiple episodes designing ways to kill the Turtles, Chaplin nearly succeeds in his debut with his Nigh-Invulnerable Mecha-Mooks, which were only stopped thanks to sabotage by Stockman.
- Amazon Chaser: A look at his Amazonian Blade Bots makes it clear that a large part of his crush on Karai rests on her ability to kick ass.
- Ascended Fanboy: He is positively ecstatic to be working with his personal hero, Stockman.
- The Bus Came Back: After being absent in Season 4, he returns in Season 5 as Karai's lieutenant.
- The Dragon: Karai's lieutenant in Season 5.
- Fantastically Indifferent: What's his reaction to finding out his boss is an alien? He thinks it's "wicked cool".
- Foil: To Stockman. While Stockman is sarcastic and his plans fail all the time, Chaplin is very friendly and his creations (the Amazonian Blade bots) were nearly victorious with eliminating the Turtles. The only reason they failed was because Stockman sabotaged them.
- Improbable Age: Although the art style makes it somewhat hard to determine just how old he is, the various comments made about it suggest that he is either a teen or barely in his twenties when he debuts, which makes him rather young for a doctor and way too young for a department head.
- Mythology Gag: He looks like the 1987 human Baxter Stockman, sharing the same wardrobe, with the only difference being his hair color being red, but that's derived from Baxter's eventual mutation into a fly.
- Nice Guy: Despite working for the Shredder, he's extremely friendly and enthusiastic.
- Punch-Clock Villain: He's not evil at all, just on the wrong side and loyal to Karai.
- Sarcasm-Blind: He never picks up on Stockman's insults.
- Took a Level in Badass: In Season 3, he's your typical geeky scientist who rarely goes out in the field and needs support when he does. In Season 5, he's muscled up and personally leads the mooks against a horde of demons.
Voiced by: Sean Schemmel
A highly skilled Foot Ninja who tries to bring the Clan back to its former glory in Season 7, and who becomes Cyber Shredder's agent in the real world.
- Animal Motif: The dragonfitting, since he's also The Dragon.
- Arch-Enemy: Becomes a secondary one to Casey. Though Hun is always the more prominent example, Casey has a lasting grudge towards Khan over being an Evil Mentor, which makes their encounters more personal than they would've been otherwise.
- Convenient Replacement Character: Essentially only introduced in Back to the Sewers to replace Karai as the acting leader of the Foot, since it's heavily implied that she left with Chaplin after the Season 5 finale
- The Dragon: To Cyber Shredder.
- Evil Mentor: He is first seen running a martial arts school, whose students include Casey.
- Flat Character: He doesn't serve much purpose besides being the Shredder's right-hand man.
- Hero Killer: In the Bad Future where the three Shredders wage war with each other, Khan takes credit for killing the Turtles. They're not happy to meet him for real once back in their true time period.
- Undying Loyalty: Even after the Foot essentially dissolved after Season 5, he still trained ninjas to prepare for the return of the Shredder.
The standard ninjas of the Foot Clan. They are pretty weak when fought alone, but can quickly overwhelm their opponent when they attack them as a group.
- Conservation of Ninjutsu: As the series went on and they became less of a threat, this inevitably took into effect.
- Dark Is Evil: They are clad in black clothing.
- Highly Visible Ninja: Averted, as they behave like actual ninjas, utilizing stealth to their advantage.
- Mook: They are the standard mooks of the Foot Clan.
- Ninja: Obviously.
- Took a Level in Badass: Inverted. In the first episode, they nearly managed to defeat the Turtles, which forced the heroes to retreat. But as the series went on, they became less of a threat. By "The Way of Invinsibily", the eighth episode of the series, the Shredder has already begun to look for different methods in taking out the Turtles, which led to Stockman "creating" the Tech Ninjas.
- Played straight in Season 4, where Karai becomes the new Shredder and reorganizes the entire Foot Clan. They become a much bigger threat than they were before and give the Turtles a run for their money.
Foot Tech Ninja
Foot Ninjas who are equipped with special cybernetic suits. Their suits not only enhance their abilities, but also grant them invisibility.
- Ambiguously Human: In "The Way of Invinsibility", Stockman talks about creating them but he could just be talking about their suits. Also, some are seen with bandages or appear to show human emotions across the same episode and others.
- Clothes Make the Superman: Their suits enhance their physical abilities and allow them to be invisible.
- Combat Pragmatist: They would do anything in order to achieve victory. One of them even piloted a vehicle against the Turtles.
- Cool Mask: With almost bug-like eyes.
- Establishing Character Moment: In "The Way of Invisibility", Stockman introduces them to the Shredder, explaining their abilities and strengths.
- Invisibility Cloak: Their suits allow them to be invisible. This is also what makes them more challenging than the regular Foot Ninjas.
- Turned Against Their Masters: A variation, as Stockman is implied to have created just their suits. At the end of "The Way of Invisibility", two Foot Tech Ninjas drag Stockman off to get "punished" on Shredder's orders
The scientists and technicians of the Foot Clan. They are responsible for the advanced technology of the Clan, but they are rarely seen in combat.
- Bald of Evil: All of them are bald
- Eyeless Face: Their eyes are obscured by their visors.
- Omnidisciplinary Scientist: They are responsible for the technology of the Foot Clan, but they are also specialized in genetic engineering, as seen in "Notes from the Underground, Part 1".
- One-Way Visor: Their visors conceal their eyes.
- Took a Level in Badass: Throughout most of the series, they are largely useless in combat and are protected by the Foot Ninjas. When Karai reorganizes the entire Foot Clan in Season 4, various Foot Technicians are seen piloting mini mechs.
- Uncertain Doom: The two Foot Technicians from "Darkness on the Edge of Town" are taken by Hun at the end of the episode. It's unknown if they were killed, simply detained or mutilated like Stockman.
- You All Look Familiar: All of the Foot Technicians, with the exception of the one from "Notes from the Underground Part 1", look identical.
Robotic soldiers and duplicates who are specialized in combat. They were created by Baxter Stockman.
- Arm Cannon: One of them has a laser cannon.
- Canon Immigrant: A Foot Mech first appeared in the TMNT 2003 game as a boss called "Foot Gunner" before making a proper debut in the actual series.
- Cyber Cyclops: All of them have one eye. The duplicates, however, have two.
- Evil Knockoff: Several of the Foot Mechs were designed to resemble various influential figures like the US president and the prime minister of England. There was also a robotic copy of Splinter, who was created to infiltrate the Turtles and take them out.
- Handicapped Badass: Several of the Foot Mechs are incomplete but fight anyway with ones without a head and with only one complete arm still putting up good fights.
- Katanas Are Just Better: One of them uses a katana.
- Mecha-Mooks: Obviously. They are robotic soldiers and robotic duplicates of people (like the mayor and the president).
- Shock and Awe: The headless Foot Mech can deliver electric shocks to anyone it touches.
- Uncertain Doom: The Foot Mechs are all apparently destroyed in "Rogue in the House, Part 2", but do make two reappearances in the show (both were dream sequences but one was Dreaming of Things to Come), making it possible that some were salvaged from the wreckage of the ship, such as the headless one which just fell into the water and the one with the laser cannon (he was ripped in half, but this was a fate another Foot Mech had remained functioning after earlier).
Amazonian Blade bots
Robots who are specialized in combat and were made in the likeness of Karai. They were created by Dr. Chaplin and were used in a plan to take out the Turtles.
- Amazon Brigade: They are a group of robots, who are based on Karai.
- Establishing Character Moment: At the beginning of "New Blood", they are tested in a fight against Karai. Then they proceed to kick her butt.
- Fembot: All of them are based on Karai.
- Mecha-Mooks: They are robots made to resemble Karai. Needless to say, they are far tougher and more powerful than the Foot's previous Foot Mechs.
- Naginatas Are Feminine: One of them carries a naginata, though Donatello later picks it up since his bo staff got broken in half earlier by a chainsaw.
- Nigh-Invulnerable: They survive explosions, being flooded, falling in the water, strikes from the Turtles and they just keep coming.
- Near-Villain Victory: They were nearly victorious in killing the Turtles. The only reason they failed was because Stockman sabotaged them.
- Robot Me: Chaplin deliberately designed them to resemble Karai.
Hideously mutated clones of the Shredder, dressed in modified Shredder armor and trained to work as elite Foot soldiers.
- Adaptation-Induced Plot Hole: Due to the reveal that the Shredder in this series is an Utrom, why he has distinctly humanoid clones is never adequately explained.
- Big, Thin, Short Trio: Shiva-Shredder is huge and hulking, Claws is thin and lean and Shrimp is short.
- Body Horror: Downplayed, as we don't know what they look like under the armor, but they are still hideous: one of them has four arms, the other has large pincer-like hands with spikes, while the third one is unnaturally small.
- Fragile Speedster: Owing to his size, Shrimp is incredibly fast, but not as strong as the others.
- Lean and Mean: Claws is notably slimmer than his "brothers".
- Multi-Armed and Dangerous: Shiva-Shredder has four arms, each equipped with Shredder claws.
- Spikes of Villainy: Their armors are covered in spikes.
- Uncertain Doom: Happens to the four-armed and small mutants: as they stalk the Turtles in an elevator, the heroes cut the elevator's wires, causing it to drop and explode. They are never seen again and whether the explosion killed them or not is unknown.
- What Happened to the Mouse?: After their brief appearance in "Return to New York" parts 1 and 2, they are never seen again.
A specialized division of the Foot. They are the elite ninjas of the Foot and the Shredder's personal body guards and lieutenants.
- Avenging the Villain: After the Shredder's apparent death at the hands of the Turtles, the remaining Elites swear a vendetta against both them, the factions of the Foot and other gangs now fighting for control over New York.
- A Day in the Limelight: They got a little more focus in the "City at War" arc as they try to regain control of the city for themselves.
- Conservation of Ninjutsu: There are only four of them and they are by far the strongest of the Foot Ninjas. In their first appearance, they completely beat up Leo and in a later episode, it took the combined efforts of all of the Turtles in order to take them out.
- The Dreaded: Becomes this to Leonardo after the savage beatdown he receives at their hands. They are not present in the comic book version of the storyline.
- Elite Mook: They serve as the absolute best fighters of the Foot, second only to Shredder himself.
- Enemy Civil War: They strike at all parties involved in the war over the New York underworld, including the Japanese Foot.
- Establishing Character Moment: In the very same episode they're introduced, they savagely beat down Leo to the point he's nearly dead. Also, they later completely ransack April's antique store. All of this establishes them as formidable foes and The Dreaded to the Turtles, especially to Leo.
- Flat Character: None of them really have any character traits beyond their blind loyalty to the Shredder. In the cartoon, each Elite has a unique weapon, but that's about it.
- Knight of Cerebus: Much like the Shredder himself. Whenever they appear, the Turtles treat them as serious opponents who are definitely capable of killing them. Or at least that was the case in Season 1, after which the Turtles became better at fighting them.
- No-Holds-Barred Beatdown: Savagely beat up Leo, leaving him nearly dead.
- Red Eyes, Take Warning: All of them have red eyes.
- Spared by the Adaptation: Barring the uncertain question of whether or not they eventually got killed by the Tengu Shredder, the Foot Elite in this series don't die at the hands of the Turtles during the City at War story, unlike their Mirage counterparts, and go on to become recurring villains until the fifth season.
- Uncertain Doom: In the fifth season, they're taken down by the Tengu Shredder and are never seen again, not even during Fast Forward or Back to the Sewers. Whether they died or not is never adequately answered.
- Undying Loyalty: They are blindly loyal to the Shredder. This is taken Up to Eleven, as after his apparent dead, they fight against everyone, including Karai, who came in order to stabilize the Foot and become its new leader before Shredder's resurrection. They only became loyal to her after she kicked her asses in a fight.
- Weapon of Choice: All of them carry a specific weapon: a battle axe, a double bladed sword, a spear and a trident.
Voiced by: Sean Schemmel (Earth, Fire, and Metal Mystics) and Brian Maillard (Wind and Water Mystics)
Powerful beings who possess mystical powers. After Ch'rell's defeat, they are infuriated at Karai who disrespects and mistreats them. They eventually leave the Foot in order to resurrect their real master - the Tengu Shredder. Due to this, they are no longer affiliated with the Foot and so their page can be found here.