Leonardo

Leo
Fearless Leader
Lame-o-nardo (Raphael)
Captain Leo
Mr. Turtle (Chloe)
Sensei Leo (Casey)
Hero Boy (Raphael)

Species: Mutant turtle
Gender: Male
Height: 5'10"
Bandana color: Blue
Eye color: Cobalt blue
Hair color: None/bald

Hamato Yoshi/Splinter (adopted father)
Tang Shen (adopted mother; deceased)
Hamato Yuuta (adopted grandfather; deceased)
Raphael (brother)
Donatello (brother)
Michelangelo (brother)
Hamato Miwa (older adopted sister)

lair itself is a converted subway relay station, though it connects to the sewers.
Rooms:
•Entrance
•Common area
•Kitchen
•Garage/Donatello's lab
•Dōjō
•Splinter's bedroom
•Raphael's bedroom
•Michelangelo's bedroom
•Donatello's bedroom
•Leonardo's bedroom
•bathroom

April O'Neil
Casey Jones
Slash
Skinhead
Tyler Rockwell
Pete
Mondo Gecko
G'Throkka
Y'Gythba
Karai/Hamato Miwa
Shinigami
Fugitoid

Leo is an anthropomorphic mutant turtle and ninja warrior with fern-colored skin. He has cobalt-blue irises with black pupils; however, much like his brothers, his pupils vanish—leaving his eyes entirely white—whenever he is in combat or moving stealthily. He wears a blue bandana mask, with the length of its trailing ends falling somewhere between those of Donnie’s and Mikey’s. As the most skilled fighter, Leo’s appearance remains largely consistent with his previous incarnations. In terms of height, he stands somewhere between Raph and Donnie. His ninja gear consists of diagonal straps, brown knee and elbow pads, and beige bandages wrapped around his wrists, ankles, and fingers.

Leonardo and his brothers were once ordinary turtles. As infants, they were purchased as pets by a kind-hearted man named Hamato Yoshi. One day, while passing by a suspicious individual, Yoshi sensed something amiss and decided to follow him. Unfortunately, Yoshi gave himself away when he accidentally stepped on the tail of a brown rat. The Kraang discovered him and attempted to kill him, but Yoshi put up a fierce resistance. During the scuffle, the aliens dropped a canister of mutagen; as Yoshi stepped on the rat, he mutated into a humanoid brown rat, taking the name "Splinter." Meanwhile, Leo and his brothers—having come into contact with both Yoshi and the pet store owner from whom they were purchased—mutated into humanoid turtles. Yoshi raised the turtles as his own children and trained them in the art of ninjutsu. Knowing that they would never be accepted by society—and with the Kraang hot on his trail—Splinter and the turtles took up residence in an abandoned water tower and warehouse, remaining hidden from the outside world. Through these hardships, a deep bond formed between Splinter and the turtles. Observing the little turtles attempting to mimic his ninjutsu training, Splinter realized he could turn this unexpected new life to their advantage. Taking one of his favorite books on Renaissance art, he named each of them after the artists he admired most. After the final battle with the Kraang in the sewers, Splinter overheard them discussing how it had become impossible to track him and the Turtles there, so he decided to stay. In this way, Splinter found a safe place where he could raise his adopted sons. Knowing that the world would be dangerous and that a time would come when they would want to explore the world above, Splinter began training the boys in the art of ninjutsu. Eventually, Splinter gifted Leonardo his pair of katanas, telling him, "The katana is a noble samurai weapon, forged for those who possess exceptional courage, discipline, and skill."

Leo is perhaps the most ninja-like of all the turtles. A dedicated prodigy in the art of ninjutsu, he takes charge of the turtles during their missions—journeys that lead them from the darkest alleyways of New York City to the farthest reaches of outer space. He is a Japanophile; he takes his ninja training more seriously than any of his brothers and shows a keen interest in Master Splinter’s stories about his past life as a master ninja, as well as the cultural lore of his homeland. Thanks to his unwavering commitment to ninjutsu, his composed discipline—and, in part, because he himself asked for the role—Splinter wisely and unhesitatingly chose Leo to lead the turtles. As Splinter explains, this is because his leadership abilities and skills "come not from the head, but from the heart."
Leo acts as the "glue" that holds the brothers together, often trying to keep them in line by saying things like, "Come on, guys! Focus and concentrate!" He is a natural-born leader and is fiercely protective of his family.
As the eldest of the turtle quartet, Leo generally strives to be a mature and responsible big brother. Yet, he can also act in very typical ways—teasing Raph for reading a Fantastic Four comic book, roughhousing with Mikey after discovering that his favorite comic had (or so he thought) been used as toilet paper, or arguing with Donnie over the creation of a robot designed to fight off a Kraang invasion. Nevertheless, he remains a calming presence for his brothers—especially Mikey—whenever chaos erupts. All in all, he is a deeply caring individual. Leo may be the most mature of his brothers, but he certainly possesses a sense of humor. While he is well above the childish pranks favored by his brother Mikey—and generally leaves the sarcastic jabs to his brother Raph—he has a sharp tongue and a quick wit, often making biting remarks, sarcastic retorts, and the occasional cliché catchphrase.
Leo is a perfectionist. He wants his friends and family to be proud of him, and he is incredibly hard on himself whenever he makes a mistake. Although he tries to keep his brothers in line, he can sometimes be overly bossy and controlling—a trait that often gets under their skin, especially Raphael’s.
Like his younger brother Mikey, Leo frequently demonstrates empathy and compassion; he understands the difference between right and wrong and is inclined toward mercy. For instance, Leo spared Fong after the Turtles defeated the Purple Dragons at Murakami’s restaurant—much to Raph’s frustration, as Raph argued that they shouldn't show mercy to criminals who harm innocent people. This proved to be the right choice later on, when Fong returned the favor by handing Leo a katana just as Xever, Bradford, and the Foot Clan were gaining the upper hand. His intuition also led him to believe that people possess a good side and are capable of a change of heart—even when it might seem unlikely. For instance, he believed that Karai could be good and sought to bring her over to his side—especially after discovering that she was, in fact, Splinter’s long-lost daughter. Throughout this process, however, she was frequently manipulated, outmaneuvered, or deceived, until she finally uncovered the truth for herself. He even went so far as to want to bring Karai to the lair so she could meet her true father—much to Raph’s obvious skepticism.
He is the only Teenage Mutant Ninja Turtle capable of using the spiritual healing technique known as "healing hands" to mend both himself and others. When performing this technique, he chants a mantra and executes a series of hand seals, causing a white aura to envelop his body.

Being a leader—and eventually a sensei—carries a tremendous amount of responsibility. Things become even more challenging when his three younger brothers defy him or team up to tease him—with Raph and Donnie, in particular, often questioning his leadership. Leo himself occasionally makes impulsive decisions, such as embarking on reckless solo missions, running off, or getting into mischief with his sister. While Donnie and—especially—Raphael are prone to explosive outbursts of anger, Leo rarely loses his temper.
As the leader of the Turtles, Leonardo strives to be a brave, decisive, and flawless hero. Unfortunately, he is still an inexperienced teenager (at least for now) with three boisterous brothers. This gap between his aspirations and his current reality is the greatest source of frustration in Leo’s life. He is the most driven of the four Turtles, training and studying tirelessly. He tends to be hard on himself, but his diligence does not go unnoticed; he is Splinter’s favorite student—a position that makes him crave his master’s approval all the more.
His leadership qualities are always on display—though they have, at times, landed him in quite a bit of trouble—and he remains deeply committed to his training, always fighting to protect his brothers’ lives.
Leo is the most disciplined and dedicated of his ninja brothers, but that doesn’t change the fact that he is still a teenager—and, like any teenager, he knows how to have fun. When he isn’t on missions, preparing for them, or honing his ninja skills, he plays video games, reads comic books, masters the pinball machine, skateboards, eats pizza, spends time with his brothers and friends, and—most of all—watches reruns of his favorite TV show, Space Heroes. Leo absolutely adores the series and finds an ideal role model in its protagonist, Captain Ryan, whom he views as a great leader and the very embodiment of the hero he aspires to be. A recurring gag involves his love for the show leading to comical friction with Raph, who never misses an opportunity to call it "stupid." Leo often joins in on Captain Ryan’s monologues while watching the show, and he even occasionally mimics the character during missions. Surprisingly, when Leo suffered an anxiety attack after April was captured by Dogpound—at a time when the Turtles weren't yet prepared to face such an opponent—it was Raph who snapped him out of it by meeting him on his own level, quoting a line from one of the show's episodes. Leo tries to project strength by adopting Captain Ryan’s already heroic persona, but this can sometimes backfire; he often ends up making rather trite or ridiculous statements in an attempt to intimidate his enemies—such as introducing his team as the "Mighty Mutants" or the "Ninja Turtles" while striking a heroic pose, or telling a scientist experimenting on a monkey that he’s had enough of these "monkey business" antics. Overall, Leo is a responsive, enterprising, bold, responsible, hardworking, caring, noble, respectful, and enthusiastic ninjutsu prodigy with a positive outlook. He is the most serious, disciplined, level-headed, mature, spiritually developed, stoic, sensible, quiet, brave, and determined member of the team.

Mutant Physiology: As a mutant, Leonardo has gained extraordinary physical attributes thanks to the mutagen known as "Ooze." He possesses strength, speed, reflexes, agility, endurance, recovery rates, and overall durability that far exceed those of the finest human athletes.
Enhanced Strength: The extent of his strength was fully demonstrated when Leo held back Krang Prime. Among the turtles, Leonardo ranks second in terms of physical power; while Raphael has defeated him in past sparring sessions and training bouts, Leonardo has also emerged victorious on occasion. Regardless, he is stronger than both Donatello and Michelangelo. His enhanced strength provides a significant combat advantage, allowing him to easily overpower opponents such as Foot Clan ninjas. Beyond delivering powerful physical strikes, he is capable of hurling heavy objects—including human beings—over his head. He can also push back or hold his ground against larger and/or physically stronger adversaries—a feat particularly evident when he is enraged, such as when he managed to land several blows against Mega-Shredder.
Enhanced Speed: Leonardo is capable of moving at great speed, traversing rooftops with ease while maintaining his momentum. Despite being a turtle, he is far from slow. He can also manipulate objects with high speed, such as when he spins the blades of his katanas. Furthermore, Leo possesses the reflexes to deflect laser blasts from Krang weaponry using his katanas. Enhanced Reflexes: Leonardo possesses incredible reaction speeds, allowing him to dodge projectiles such as lasers, Krang-tech blasts, and enemy attacks—even when Mikey tries to hit him with a water balloon. He can move fast enough to evade laser fire from Krang weaponry. He is also capable of spinning and swinging his twin katanas with extraordinary speed to deflect incoming attacks.
Enhanced Healing: Splinter taught Leonardo a unique, ancient, and secret healing art known as the "Healing Hand." Through this technique, Leonardo can heal himself and others; he was even able to purge Karai’s poison from his own body, despite there being no known cure for it. According to Splinter, Leonardo possesses immense healing potential, and his brushes with death have granted him "a power that few martial arts masters can claim to possess."
Heightened Agility: Leonardo is exceptionally agile—surpassing all his brothers, with the possible exception of Michelangelo. His agility and dexterity allow him to perform impressive acrobatic leaps, clearing significant distances between buildings. Leo is also nimble enough to scale an apartment complex, utilizing every available foothold.
Enhanced Stamina: Leo possesses a level of endurance that far exceeds that of Olympic-caliber athletes.
High Durability: Leonardo is highly resistant to physical trauma. He has proven capable of surviving falls from several stories up without showing any signs of discomfort or injury. He has withstood attacks from superhuman adversaries, such as Dogpound, Slash, Super Shredder, and others.
Retractable limbs: Although it rarely happens, he possesses retractable limbs and the typical turtle ability to pull his head and limbs inside his protective shell.
Semi-aquatic adaptations: He is capable of swimming long distances, diving to great depths, and holding his breath underwater for extended periods.

Leonardo is the most rigorous, serious, focused, disciplined, and responsible of his brothers; he is capable of handling much larger opponents with greater speed and ease, and is highly effective at managing stress. Like his brothers, Leonardo underwent intensive training under Splinter, becoming a highly skilled ninja warrior—though to a significantly greater degree than the others. During training sessions with Splinter and his brothers, Leonardo was the only one who managed to land a strike on Splinter. He possesses an expert knowledge of pressure points—which he demonstrated, for instance, during an altercation and fight with Raphael—and employs a wide range of martial arts techniques. This makes Leonardo not only the best fighter among the Teenage Mutant Ninja Turtles, but also one of the most accomplished combatants in his entire circle.

Leadership Qualities: Leonardo’s bravery, decisiveness, and strength of will make him an excellent leader. Initially, his only shortcomings as a leader stemmed from a lack of experience. His immaturity sometimes led him to make impulsive decisions that could exacerbate a situation; furthermore, his brothers would occasionally disobey his orders, and his desire to be a hero sometimes resulted in awkward, ill-timed bravado during battle. His greatest fear is letting his team down and failing as a leader. However, as he and his brothers continued their fight against Shredder and his forces, Leonardo evolved into a more focused and disciplined leader—one even prepared to sacrifice his own life for the sake of others. He is also capable of making difficult decisions whenever the situation demands it. It is worth noting that Splinter truly believed, from the time they were very young, that Leo was destined to lead his brothers.
Kenjutsu: Leonardo is a highly skilled martial artist and an expert swordsman. He was trained in Japanese swordsmanship by Splinter. It is safe to say that Leonardo has had an interest in the sword since childhood; as a young turtle, he would often approach Splinter’s katana and mimic his movements using a screwdriver. Since his signature weapons are a pair of katanas, he is highly proficient in the Niten Ichi-ryū ("two heavens as one") style of swordsmanship. He employs his katanas for both offense and defense—using them to slice through the metal bodies of Kraang robots and Foot Bots (piercing and dismembering them), as well as to deflect shuriken and laser fire. His swordsmanship allows him to contend with experienced and powerful members of the Foot Clan—including Tiger Claw, Karai (before she learned the truth about her origins), and even Shredder—occasionally managing to push them back, if only slightly, during combat.
Ninjutsu: Through years of intensive and rigorous training, Leonardo has attained a high level of mastery in ninjutsu.
Tantojutsu: In addition to his swordsmanship, Leonardo is also skilled in the use of the tanto. Whenever he is without his katanas, Leo can detach a tanto from the hilt of one of his swords and use it for self-defense.
Kyujutsu: Leonardo also possesses archery skills, utilizing a yumi (bow) and arrows for long-range combat.
Shuriken-throwing technique: Leonardo is capable of throwing shuriken with remarkable precision. On one occasion, he threw a shuriken into the tire of Snake’s van from a considerable distance, causing the vehicle to overturn.
Martial Arts Master: Leonardo is the most skilled fighter among the Teenage Mutant Ninja Turtles. Combining his martial arts training with his enhanced physical attributes, he is capable—even when away from Shredder—of single-handedly defeating an army of Foot Clan robots, as well as Shredder’s top henchmen.
Stealth: Thanks to his training under Splinter, Leonardo—much like his brothers—is able to blend into the darkness, hide, and move through the shadows while remaining completely undetected. Like his brothers, he is stealthy; he can hide in the shadows, move about undetected, and engage in hand-to-hand combat, much like a true ninja.
Intuition: He has repeatedly demonstrated keen intuition and an ability to detect enemies—for instance, by dodging Splinter’s bokken during training, thwarting a water-balloon prank attempted by Mikey from behind, spotting numerous traps set by the Foot Clan, and sensing the presence of Foot Clan soldiers even when they are behind him.
Improvisation: He frequently displays a remarkable capacity for improvisation, turning his surroundings to his advantage. This is a crucial aspect of his leadership, especially when he is under constant pressure.
Tactician and Strategist: As the leader of the Teenage Mutant Ninja Turtles, Leonardo is a highly skilled strategist. He excels at establishing defensive lines and devising complex plans. Much like Donnie, he knows how to strategically employ various projectiles to strike a target—for example, when he fires several spiked arrows that ricochet off the walls of a laboratory to hit Dracula in the back (though they fail to inflict any significant damage).
Weapon Proficiency: Leonardo is adept with a variety of weapons. He has also shown a quick ability to adapt to using non-lethal improvised weapons, such as a metal pipe, to defeat members of the Foot Clan.
Bilingualism: Leonardo speaks English and has demonstrated a command of the Japanese language.
Knowledge of Pressure Points: Leo is also highly skilled at targeting pressure points—an ability nearly on par with that of Splinter himself. He uses Raph's nerve-tugging technique to force him and Mikey to spy on the Foot Clan, and also uses the same technique to disable Tatsu's heightened hearing by disorienting him with Casey's exploding pucks.
The "Healing Hands" technique: Splinter taught Leo the art of healing, which Leo used to recover from injuries inflicted by Slash while the latter was under mind control. Leo mastered the technique quickly, employing it to heal Karai, as well as himself after he had been poisoned. Splinter noted that while it took many martial arts masters years to perfect this technique, Leo required only a few hours—a testament to his natural gift as a healer.

His signature weapons are a pair of katanas (刀), which he wields using the Niten-ryū style of kenjutsu (also known as Niten Ichi-ryū, or "Strategy of Two Heavens as One"), making him a highly skilled and exceptional swordsman. (Although Leonardo’s swords are referred to as katanas, they are, in fact, much closer to ninjatō (忍者刀)—also known as ninjaken (忍者剣) or shinobigatana (忍刀)—a fictional type of sword resembling a katana, depicted as a version of the weapon designed for ninjas. These typically feature a straight blade, a square guard, and a shorter length than a standard katana.) The hilts share the same dark red and gold color scheme as Raph’s sais and Mikey’s nunchucks. Leo’s weapons are the only ones in the group specifically designed to deliver lethal blows—though Leo himself is far too honorable to ever wish for such an outcome.
It is implied that Leonardo keeps several identical katanas stashed away in the Turtles' lair; for instance, on one occasion, he returns to their underground hideout carrying only one sword (having lost the other during a fight), yet he is later shown with two katanas in his scabbards.
Typically, Leonardo’s pair consists of one daitō (大刀)—a general term for the longer sword in a daishō set (the name itself refers to the blade length, which is usually 70–90 cm)—and one shōtō (小刀) or kodachi (小太刀), the general term for the shorter sword in a daishō set. ("Kodachi" can also refer to a blade similar to a wakizashi, but intended for use on its own rather than in tandem with a katana)—weapons that he, like his brothers with their own chosen arms, has mastered completely.
When Leonardo and his brothers attempt to rescue Timothy, Leonardo uses a metal pipe, wielding it in a style reminiscent of his katana technique. He also employs a yumi (longbow) and, like his brothers, is skilled in the use of shuriken.
The hilts of his katanas also serve as sheaths for smaller tanto knives. It is later revealed that Leonardo also conceals a tanto knife beneath his wrist wraps.
During a battle against a mind-controlled Raph, he demonstrated a high level of proficiency with a spear, despite his lack of experience in handling Donatello’s bo staff.

Raphael and Leonardo share a relationship that is both brotherly and competitive. Of all the turtles, they argue the most frequently—often because Raph, driven by jealousy over Splinter’s decision to appoint Leo as leader, challenges Leo’s authority. Nevertheless, they hold a deep respect for one another. It is clear that Raphael is highly protective of Leonardo and cares for him deeply, just as Leonardo cares for him. They trust each other more than anyone else, as evidenced by how often they discuss matters in private—away from the others—such as Leonardo’s conflict with Karai. Over time, the rivalry between Leo and Raph softens, and in critical moments, they consistently save one another. Raph has grown more empathetic toward Leo and has come to respect him more than ever, especially given that Leo—acting in a sensei-like capacity—possesses the full authority to put an end to Raph’s bickering.
Donatello — Leo and Donnie are very close, yet they occasionally clash. At times, Leo questions Donnie’s inventions, which frustrates Donnie immensely. When Donnie is hard at work on his technology and Leo (along with Raph) urges him to work faster or try harder, Donnie may snap or lash out. Like Raph, Donnie also challenges Leo’s authority and leadership; for instance, the two once got into a heated dispute over how to stop the Kraang invasion. Donnie wanted to stay in the city and fight back using the Turtle Mech—even though the invention was still a work in progress—whereas Leo recommended that they gather their belongings, leave the sewers, and get out of the city. During one mission, Donnie’s personal vendetta against Don Vizioso jeopardized the Turtles' objective, leading to an argument between the two brothers; however, they eventually reconciled. On the whole, they work well together. Whenever they team up, Mikey refers to them as the "Brainiacs."
Michelangelo — Leo is generally patient with Mikey, though he can occasionally get frustrated with him. On one occasion, Mikey used Leo’s favorite comic book as toilet paper just to get his attention—a move that did not sit well with Leo, who responded with physical force. Otherwise, Leo is very supportive of Mikey. When Leo is formulating a plan, he often makes sure that Mikey is actually listening and staying focused. Leo is also very protective of Mikey, having saved him from danger on several occasions. The two also work effectively together to rescue their brothers and human friends from Bebop and Rocksteady, as well as to secure a worm needed to cure Karai. Overall, the bond between the eldest and youngest brothers is very close.
Splinter — Leonardo’s adoptive father and sensei. Leonardo is the most devoted and closest to his teacher, as he always takes Splinter’s advice with the utmost seriousness. He spends a great deal of time with his sensei, asking questions and engaging in personal conversations.
Karai — At the time, Leo was unaware that she was actually Splinter’s firstborn child—his only daughter—who had been abducted by Shredder following her mother’s death. Shredder sought revenge, and to achieve this, he used Karai to destroy her own biological family. Upon their first meeting, Leonardo was both bewildered and intrigued by Karai. Leo desperately wanted to trust her, even though she showed nothing but disrespect toward him, his family, and his friends—a behavior driven by the fact that Shredder desired their destruction, and Karai was compelled to obey his commands. Leo still feels a unique connection to her; furthermore, knowing that she is Master Splinter’s long-lost daughter gives him even greater motivation to fight for her liberation from Shredder’s control. Raphael disapproves of Leonardo’s relationship with Karai, viewing her as a threat to their survival and regarding Leonardo as a liability for repeatedly giving her the benefit of the doubt. Although Karai had previously told Leo that Shredder was her father, Splinter later revealed to Leo that she was, in fact, Hamato Miwa—his own daughter—making Leo the first to learn the truth. Leo made it clear that if Karai ever dared to harm his family, he would be the one to stop her. Nevertheless, Leo never abandoned his older sister. He always understood that Karai was in an impossible position, caught between Splinter and Shredder. Leo set out to free her from Shredder’s influence, revealing the truth about her life—specifically how Shredder had used deception to serve his own ends. Initially resistant, Karai eventually chose to seek the truth for herself. Once she genuinely grasped that the truth was not a trap, a breakthrough finally occurred. Leo succeeded in convincing her, and she has since grown much closer to Leonardo. When Karai was captured once again, Leonardo tried—but failed—to save her from falling into a vat of mutagen, which transformed her into a mutant snake. Later, Karai fully embraced her Hamato family, spending more time in the lair with the Turtles.

April O'Neil is the first human friend Leonardo makes. He rescues her from the Kraang, and they become very close; in fact, Leonardo even turns to April for advice regarding his initial crush on Karai. They care deeply for one another—for instance, when April calls on Leonardo to save her from The Creep, or when Leonardo gives her hope that she might one day reunite with her mother.
Casey Jones is another human friend of Leonardo’s. Leonardo frequently calls on Casey for help, and Casey always answers the call. Although they don’t talk much, they remain good friends and are often seen sparring together. Casey (along with Raph) encourages Leo to participate in these sparring sessions. Whenever Leo feels down due to an injured leg, Casey is the one who shows him the most sympathy.
Leatherhead: While they are allies, Leonardo and Leatherhead rarely interact, except when fighting the Kraang. Leatherhead tends to spend more time interacting with Donatello and Michelangelo.
Slash: Leonardo and Slash are allies, but not close friends. Leo views Slash with suspicion and distrust, while Slash finds Leo easily irritating and prefers not to work with him. Nevertheless, Slash looks up to Leo as a role model in his own efforts to become an effective leader for the Mighty Mutanimals. He eventually admits this to Leo, who in turn apologizes for his initial lack of trust, and the two reconcile. Timothy — Leonardo didn’t interact with Timothy (the Destroyer) very often, but it always annoyed him when the Destroyer took excessive risks, putting himself in danger of injury or even death.

Shredder is Leonardo’s arch-nemesis. Among all the Teenage Mutant Ninja Turtles, Leonardo seems to have the most interaction with him—and harbors the greatest hatred for him. Although he is more familiar with Shredder’s techniques than any of his brothers, he still struggles to fight him effectively. Shredder is far more experienced in ninjutsu and possesses a wide array of skills that Leonardo almost always fails to notice; however, Shredder never manages to kill Leonardo or his brothers, as they consistently escape into the sewers of Manhattan, New York.
Krang is one of Leonardo’s enemies.
Baxter Stockman is another of Leonardo’s enemies. Leonardo frequently forgets Baxter’s name (calling him, for instance, "Dexter Bexman," "Daxter Boxman," "Blister Speckboy," etc.).
Fishface is one of Leonardo’s enemies.
Rahzar is also one of Leonardo’s enemies. It is believed that he is wary of fighting Michelangelo. When they learn that Michelangelo is in danger, Leonardo insists that they must save him. It was Leonardo who cut the ropes binding Michelangelo, after which he patted him on the head.

Leonardo is named after the famous Renaissance master Leonardo da Vinci.
The name Leonardo is of Italian origin and means "strong as a lion" or "brave as a lion."
In katakana, his name is written as レオナルド (Reonarudo).
Given that he was adopted by Hamato Yoshi/Splinter, Leonardo’s full name would be "Hamato Leonardo"—or "Leonardo Hamato" when using Western naming conventions.
In real life, Leonardo da Vinci was not only an artist but also an inventor; this adds a layer of irony, as the character Leonardo is often the "brains" of the team—a role also associated with Donatello.
Niten-ryū ("Style of the Two Heavens") is sometimes described as a weapon of Leonardo da Vinci, but in reality, it refers to a Japanese swordsmanship style rather than a specific weapon. The proper term for a pair of swords is daishō (大小). Niten-ryū is actually an abbreviation of Niten-ichi-ryū (二天一流)—a two-sword fighting style developed by the legendary samurai Miyamoto Musashi. Although Leonardo’s swords are referred to as "katanas," they are, in fact, "ninjatō" (忍者刀)—also known as "ninjaken" (忍者剣) or "shinobigatana" (忍刀).
The historical existence of the ninjaken has been a subject of debate for many years.
According to the concept art for Leonardo’s "Niten Ryū" style, one sword is longer than the other; a tantō blade is concealed within the hilt of the daitō (long sword), and a kogatana (a miniature tantō) is hidden within the wrappings of the scabbard (saya)—all serving as supplementary, auxiliary weapons to his primary blades.
His mastery of Ninjutsu encompasses: Seishin-teki kyōyō (spiritual refinement), taijutsu (unarmed combat), qigong, kenjutsu (swordsmanship), shurikenjutsu (throwing weapons), kayakujutsu (pyrotechnics/explosives), shinobi-iri (stealth/infiltration), sui-ren (water training), bōryaku (strategy/tactics), kyūdō (archery), and intonjutsu (evasion/disappearance techniques).
Of the four brothers, Leonardo appears to be the most knowledgeable regarding Japanese culture and etiquette:
He understands Japanese when it is spoken to him and is quite fluent in the language.
He is familiar with at least the basics of Japanese etiquette—for instance, he bows to Master Splinter, as first shown in "Rise of the Turtles, Part 1."
On April’s phone, his caller ID appears as "ichiban turtle," which translates to "number one turtle."
He is the most mature of all the turtles:
He was appointed leader by Splinter.
At times, he acts as a second parent to Michelangelo.
Unlike his brothers, Leonardo always takes advice seriously. Splinter.
In this version, Leonardo’s swords are positioned on his back.
His favorite show is "Space Heroes."
His favorite color is blue.
He is right-handed.
Judging by his sketches, Leo loves watching cartoons on Saturday mornings.
Leo is the only turtle who has never uttered the catchphrase "Booyakasha!"

Chompy is a turtle like creature with a dark magenta-red shell covered in black, obsidian like spikes that also cover his tail. His head (excluding his jaw), tail, feet and legs are red, while his jaw, the underside of his neck, his pad and the dots around his body (especially on the legs and tail) are deep pink and his plastron is a lavender. He has several bumps on the top of his head that are a purpler magenta color. He has freckle like things on his snout that are dark red. His iris is magenta. He possess the normal scaly skin of a turtle. His tongue is also a light purple colour.Chompy Picasso is capable of biting, and breathing/farting fire.
Ice Cream Kitty - Originally just a normal feline, when the cat consumed mutagen-tainted ice cream, it turned into an amorphous ice cream mutant.Her body is composed of Neapolitan Ice Cream, with the head being strawberry, the torso made of vanilla, and the waist and lower body made of chocolate with short stubby arms made of chocolate and vanilla. Her tail is made out of vanilla and chocolate also.

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