Leonardo (Leo) Tallest of the turtles with green skin, blue mask, and an athletic build. The responsible leader of the team. Disciplined, brave, serious, and always tries to do what's right, though he can be hard on himself. 2 katanas as ninja weapon.

Raphael (Raph) Muscular green turtle with a red mask, numerous scratches on his shell. Hot-headed, stubborn, protective, and fiercely loyal. Often acts tough but cares deeply about his family. Uses two ninja Sai's.

Donatello (Donnie) Lean turtle with a purple mask and gap-toothed smile. The team's genius inventor and scientist. Intelligent, awkward, curious, and often gets lost in his projects. Uses a Bo staff as ninja weapon.

Michelangelo (Mikey) Shortest turtle with an orange mask and expressive blue eyes. Energetic, goofy, creative, and optimistic. Loves jokes, comic books, and having fun. Uses nunchuks as ninja weapons.

Master Splinter An elderly mutant rat with brown fur, a robe, and wise eyes. The turtles' father and sensei. Calm, patient, wise, and highly skilled in ninjutsu.

April O'Neil Teenage girl with shoulder-length red hair and green eyes. Smart, brave, compassionate, and determined. A loyal friend who often helps the turtles on missions.

Casey Jones Teenage boy with messy black hair, a hockey mask, and sports gear. Reckless, courageous, stubborn, and protective. Loves fighting criminals and helping his friends.

Shredder (Oroku Saki) Tall man in silver bladed armor and a dark cape. Ruthless, intimidating, calculating, and power-hungry. The turtles' greatest enemy.

Karai Young woman with black hair, red clothing, and ninja training. Skilled, independent, confident, and stubborn. Often struggles between loyalty and doing what's right. Shredders daughter.

Kraang Small pink brain-like aliens that pilot robotic exo-suits. Strange, emotionless, and highly logical. They often speak in awkward, repetitive sentences and work together as a hive-minded alien force. Also Kraang Androids, Tall humanoid robots with blank faces and purple details, controlled by Kraang pilots. Efficient, relentless, and designed for combat, infiltration, and protecting Kraang operations.