How did the master of the Teenage Mutant Ninja Turtles become a big rat

It is caused by mutagenic agents.

3D animation in the 2012 version.

series, Sprint.

Originally human, his original name was Hamato Yoshi, and Oriku Saki (also known as Shredder) were brothers, and they practiced ninjutsu together, and they also fell in love with a beautiful Chinese woman named Tang Shen.

But Tang Shen chose Hama Toryo, and the jealous Xiao Rokuzaki challenged Hamato Liang, but failed miserably. So he designed to burn down Hamato's home, killed his wife Tang Shen, and snatched Hamato's infant daughter.

Ryo Hamato fled to the United States, where he once bought four pet turtles, only to accidentally break into another dimension.

Near the alien Krone's laboratory, he was contaminated with the mutant agent they had developed while fighting the Krone guards. This mutant agent turned Hamado into the image of the animals around him, a mouse, and also mutated his four pet turtles.

Because of the mutation, he was unable to survive on the surface as a human, so he took his four turtle children to live in abandoned sewers, raised them as a father, and taught them ninjutsu.

In the 1987 version of the original Teenage Mutant Ninja Turtles anime, Sprint was originally human, his original name was Ryo Hamato, and Koroku Kawasaki were both members of the traditional Japanese ninja organization Foot Gang Ninja. Jealous of Hamato's status, Koroku Kawasaki framed him for attempting to murder one of the Foot Gang ninja elders, forcing him to be exiled to New York. In New York, he lives in the sewers and is surrounded by rats.

3] After usurping the leadership of the Foot Gang Ninja by despicable means, Koroku Kawasaki called himself Schredder. He came to New York to hunt down Hamato. After learning that Ryo Hamato was living in the sewers, he dropped a mutant into the sewers provided to him by the alien Krona.

The mutant transformed Ryo Hamato into a rat and transformed four of his pet turtles into humanoid Teenage Mutant Ninja Turtles. From then on, Hamato changed his name to Sprint, raised four turtles and taught them ninjutsu.

If I remember correctly.

Master Sprint used to be a ninjutsu master of the Mouse.

Later, the ninjutsu master was killed by someone.

Sprint begins to wander, and in a car accident, a nuclear waste transport truck spills on four baby turtles.

Master Sprint felt pitiful for them, so he took them back to his own hole, and he himself was contaminated with nuclear waste.

So they all mutated.

Specifically, you can take a look at the 03 version of the third episode of the Teenage Mutant Ninja Turtles.

Splinter Sprint.

Sprint Teacher Shi Fei Na Master Splinter Cantonese CV: Chen Shuguang.

Height: feet [m].

Splinter weight: 65 lbs [29 kg].

**: Any** or none**, which is not a big deal for a ninja.

Favorite colors: I like purple and yellow.

Hobbies: reading, cooking, watching soap operas.

Like**:Japanese tradition**,And reggae**。

Nickname: I don't know what's there.

Favorite food: I love fresh vegetables, soups, tea, and cheese (I'm good at making cheese).

Books I like to read: Only within the scope of my collection, there is a long way to go, I have to meditate here, well......Today I choose: "The Chrysanthemum and the Knife" by Ruth Benedict, which is very useful for teaching children.

Sprint, the master of the four of them.

Sprint, the master of the four turtles.