Hamato Yoshi

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Hamato Yoshi, also frequently referred to by his alias Splinter or Master Splinter, is a mutant rat, ninjutsu sensei, known for being both the adoptive father and sensei of all four of the Ninja Turtles, the father of Miwa, husband of Luna Ordeis.
Hamato Yoshi is the son and heir of Hamato Yuuta, the leader of the Hamato Clan whose rivalry with the Foot Clan came to an end when he was a child. 
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During a confrontation with The Kraang, Hamato Yoshi was mutated into a mutant anthropomorphic sewer rat upon coming into contact with a sewer rat prior to the conflict. 
Since then ever since alluding the Kraang, he trained the Turtles in ninjutsu.
During the second Triceraton invasion, he is killed by Eric Sacks Shredder but this attempt is foiled when the Protagonists travel back in time to save Earth. 
== Appearance ==
As human, he is a tall and muscular Japanese human, with black hair and brown eyes, and he also wears a Hamato Clan kimono.
As mutant, he is a taller mutant brown rat, who wears now a Hamato Clan robe. As well, he has bandages wrapped around his arms and legs, and is barefoot.
== Personality ==
Splinter is very wise, noble, polite, humble, disciplined and generous ninjutsu sensei who can be very strict when it comes to training and letting his sons venture up to the surface, as seen in many episodes.
At certain times, he may use harsh methods in order for them to learn a lesson, as seen in "The Pulverizer Returns!", in which he took away his sons' weapons so they could learn to fight outside of their typical environment. 
Nonetheless, Splinter is a loving father who only wants what is best for his children, and will do anything that he can to protect them from harm's way.
Though stern at certain times, Splinter was known as a wise sensei, a defensive, protective and affable parent, a loving father, a stern disciplinarian, a quirky master, and a Zen (he is very often seen in the Dōjō meditating). 
He is very determined to train and protect his Family at all costs, though he grudgingly realizes that most of his children are now at an age where he will have to, at some point, give them the freedom to make their own mistakes in the outside world.
The fact that he has gone through decades of ninja training does not only mean that he is always fierce when he fights, but that he's also remarkably in tune with the universe. 
He is a ninja master at the height of his abilities; he is so in tune with the universe that he can literally feel its vibrations, allowing him to project and sense energy and, occasionally, the intentions of others.
Splinter seems to dislike anyone that lays a hand on the children.
This is emphasized in "It Came From The Depths", as he battled Leatherhead because he threatened to harm the Turtles. 
Splinter's absolute worst fear is losing his family, as seen in "Panic in the Sewers". 
His fear of losing the Turtles to the Fake Fook Clan caused him to push their training to the point where they become exhausted, stressed, and antsy, though he does eventually apologize for it. 
It is very possible that Splinter fears the fact that the children will leave him someday, as this was one of the notions that the Rat King (in "I, Monster") used against him in an attempt to control his mind.
== Skills & Abilities ==
Originally, as a human, he was a great and powerful master of Ninjutsu. 
He was training for his entire life when he was very young. 
He has mastered many skills and has great abilities, such as great strength, acrobatics, speed, stamina, and endurance greater than Olympic athletes and had pushed his body to peak physical condition. 
Splinter seems to be very adept in regards to the mind. 
For instance, when the Rat King attempted to hypnotize him, Splinter was able to defend himself from Rat King in his own dreams. 
Splinter has perhaps trained in the ways of ninja for all of his life, which makes him very methodical in physical situations, and able to act easily in difficult situations that require thought. 
Even though his mental fight with Rat King was rather strenuous, he still easily defeated Rat King with his sons' help, showing that he had to combine his thoughts with his physical power, which ultimately led him to nearly kill The Rat King. 
He can also seemingly read his foes' thoughts and predict their next move, implying that he can sense the projections of opponents (and use his keen hearing). 
This seemed to be evident during his fight with Itrom Shredder, during which Splinter also demonstrated his ingenuity by using his natural abilities as a mutant rat in the fight (something that he had never shown before, as he focused on training the turtles in more human skills), such as catching Shredder's blade in his teeth and running on all fours. 
Splinter revealed that he has psychic abilities, but had to hone them over a long time through training and practice; this sets him apart from Guardians and The Kraang (who are already natural-born psychics to begin with) and Dr. Rockwell and Dr. Victor Falco (who were augmented with psychic powers). 
In "Monkey Brains", Splinter has the ability to fight without thinking.
In "Annihilation: Earth!, Part 2", Splinter's fighting prowess are impressive enough to defeat foes more powerful than himself like several Triceratons soldiers in hand-to-hand combat. 
With combination of his fighting skills and mutant abilities, Splinter was a formidable opponent and easily one of the greatest combatants on Earth.
* Mutant Physiology: As a mutant, the Mutagen Ooze increased Splinter's natural abilities to considerable superhuman levels. He demonstrated his mutant abilities throughout the series as listed below:
* Enhanced Senses: He probably can see in the dark like regular rats do. He had shown in his feral state that he was able to smell a piece of cheese outside of his cage from Baxter Stockman glass.
* Enhanced Strength: As a mutant, Splinter is deceptively strong and proven more tougher than he appears to be. His strength was shown that he was able to slap his hand against Dogpound and toss him into the air by a back hand and use his anger to take off the heavy pillars of his back for revenge for Leo and Leatherhead in The Invasion, Part 2. He was even strong enough to send his opponents flying at rapid speed as he done it with the Shredder in The Invasion, Part 2, though it may partially be a technique skill.
** Jaw Strength: Splinter's jaws are powerful enough to break certain forms of metal, such as Shredder's retractable sword in "Showdown, Part 2".
** Enhanced Leaping: Splinter's strength extends into his legs, allowing him to jump at exceptional heights and distances. He can even jump very well to Shredder's window.
* Enhanced Speed: He is shown to have a lot of abilities that ordinary rats possess - namely running on all fours. His speed is sufficient for him to get behind Dogpound.
* Enhanced Reflexes: Splinter possesses great reaction speed and shown in many fight occasions that he can dodge incoming attacks.
* Enhanced Stamina: For a mutant of his age (50), Splinter seems to be very well to fight without getting tired as much as regular humans. This is shown that he is well enough to take attacks from Shredder as he was able to go toe-to-toe with him. He was able to defeat Foot Ninjas, Fishface, and Dogpound with absolute ease before he fought against the Shredder in a long brutal fight.
* Enhanced Endurance: Splinter has extreme levels of pain tolerance. Even when countless heavy pillars fell on him during another fight with Shredder, he was still more than capable of fighting competently against his opponent. He was able to endure the attack from the mind controlled Slash's mace. He survived getting repeatedly struck by large structural metal beams while falling in considerable immense height sewer.
* Enhanced Agility: Splinter is extremely agile and because of his great agility, he used his agility as his advantage against his opponents. For example, his astonish agility enable him to outmaneuver Shredder during their second encounter fight.
* Enhanced Healing: With constant years of practice, Splinter has learned healing techniques to recover from massive trauma injuries. As evident in some episodes, he taught his adoptive sons like Leonardo, Raphael, Donatello, and Michelangelo on how to heal themselves from incurable poisons, which implies Splinter knows various healing techniques.
* Ninjutsu: As a master of Ninjutsu, Splinter was extremely knowledgeable, speedy and has greater strength. He can take down larger opponents without a whole lot of effort, as demonstrated in "It Came From The Depths". In "Return to New York", he easily defeated three Shredder mutants in a very short battle.
* Master Martial Artist: Splinter's extraordinary skills of Ninjutsu are so remarkably high that even Bradford (back when he was still Dogpound) referred to him as "one of the best" and claimed that "he's as skilled as Master Shredder, but he doesn't have the stomach to finish the fight". Although the Shredder's skills of Ninjutsu often seem to be to be higher due to his knowledge of forbidden techniques (even surprising Yoshi); however, he has been defeated by Splinter twice (once in Japan just before the fire that burned the Hamato home and again in "Showdown"). Splinter defeated the Shredder in other several occasions ("Showdown, Part 2", "Earth's Last Stand", etc). He also defeated Super Shredder, a feat that not even a now more powerful than before April O'Neil, Raphael, Casey Jones, Slash and other combatants failed to accomplish. In Showdown, Part 1, Splinter easily defeated the army of Foot Clan, Dogpound, and Fishface all at once. In "The Manhattan Project, Part 1", Splinter was able to best advanced highly skilled Tiger Claw before being interrupted by Karai firing a dart behind his neck.
* Teaching and Wisdom: He is a great teacher to those who will like to train, as he trained his four sons for 15 years of their lives. He even trains April well enough to defend herself from enemies. He even told them that weapons usual chose their owner not the other way around. In "Turtle Temper", he helped Raphael by giving a flashback story to not let anger control him. In "I Think His Name is Baxter Stockman", Splinter gave another advice to the four ninja turtles that they shouldn't fight the armor, but fight the man inside the armor instead. In "The Pulverizer Returns!", Splinter taught his four adoptive sons to not rely on their primarily weapons, but adapt their surroundings and use items as weapons to fight their opponents in combat missions.
* Enemy Detection: He can easily detect when an enemy is coming. This is either do to excellent hearing that he got when he mutated or his "balanced mind" but this type of power or ability when he was human couldn't hear the noise that April was hearing. Similarly to April, he appears to possess a rare sensitivity gift.
* Weapon Proficiency: Splinter is skilled with the usage of many weapons, as well as capable of adapting other items into weaponry.
* Master of Stealth: As a ninja, Splinter is trained in stealth.
* Intelligence and Strategist: He is naturally very intelligent, and has honed his intellect with knowledge of strategy in combat.
* Pressure Point Intuition: Splinter is highly knowledgeable in pressure point techniques, which can stun anyone. For example, he uses this technique on Raphael after gloating about his "victory".
== Weapons ==
* Cane
* Swords
* Ninjitsu Weapons
== Family ==
* Unnamed Mother (Unknown)
* Hamato Yūta (Father) (Deceased)
* Luna Ordeis (Wife)
* Tang Shen (Sister in Law)
* Hamato Miwa (Daughter)
* Adam Ordeis (Son)
* Multiple other Children
* Leonardo (Adopted Son)
* Raphael (Adopted Son)
* Donatello (Adopted Son)
* Michelangelo (Adopted Son)
== Voice Actor ==
Hoon Lee.