Teenage Mutant Ninja Turtles Character Biographies

Learn about every teenage mutant ninja turtles names in the Universe! From Leonardo to Master Shredder, our team used our knowledge to put together some great information in our online TMNT Biography.


Leonardo is the oldest of his brothers and the leader, wears a Blue bandana and wields two katana swords. Leo is well known for being smart, strategic, and obedient to his Father/Sensei Master Splinter.


Raphael is the second oldest of his brothers and is driven by his anger. He sports a Red bandana and is a master of his Sai’s. Raph is well known for being strong, caring, and hot headed.


Donatello is the third born and is very intelligent. He wears a Purple Bandana and uses a six-foot Bo Staff (Naginata). Donnie is well known for being nervous, astute, and a tech guru.


Michelangelo is the youngest and is adored by his brothers, even when he provokes them otherwise. He flaunts an Orange bandana and uses Nunchaku (Nunchuks). Mikey is known for being funny, fast, and high-flying.

Master Splinter

Master Splinter is the father and sensei who raised and taught the Ninja Turtles. Previously led Japan’s Foot Clan before an altercation with Oroku Saki which cost him his family. He fled to America against his own will and was mutated to a giant rat in New York, he then met his new turtle family.

 April O’Neil

April O’Neil is a long time companion of the Teenage Mutant Ninja Turtles in all incarnations. She lost her family so Master Splinter and the turtles are her new family.

 Casey Jones

Casey Jones is a hot headed vigilante who seeks to end crime in New York. He’s always had an affection for April O’Neil and special relationship with Raphael.

Master Shredder

Master Shredder is driven by vengeance towards Master Splinter and the turtles, everyday they are alive is a disgrace to his family name. Friend of Hamato Yoshi (Master Splinter) in Japan until a chaotic fight for the same women. His evil has no limits as he will stop at nothing until he defeats Master Splinter and his disciples.


Utrom are a race of aliens from Dimension-X with one soul purpose, to take over Earth. Responsible for the mutagen who spawned Master Splinter and the Ninja Turtles. Krang is a warlord banned from Dimension X and teamed up with Shredder.


Karai is the General of the Foot Clan and loyal servant to Shredder, her loyalty is sometimes amiss as she listens to her conscious to protect the Teenage Mutant Ninja Turtles.

The Foot Clan

The Foot Clan legacy started in Feudal Japan, loyal minions to their masters throughout time. Currently serving the evil Oroku Saki (Master Shredder) in New York city. This army is strongest in numbers.