4 Ninjas, 4 turtles, trained by a sewer rat, into saving the world from an evil mercenary with an army of ninjas.
- Leonardo (Jason Biggs)
- Raphael (Sean Astin)
- Donatello (Rob Paulsen)
- Michelangelo (Greg Cipes)
- Master Splinter (Hoon Lee)
- April O'Neil (Mae Whitman)
- Leatherhead (Clancy Brown)
- Foot Clan:
- Shredder (Kevin Michael Richardson) - the leader and main antagonist of the show
- Baxter Stockman (Kevin Michael Richardson) - Shedder's scientist!
- Hun (John DiMaggio) - Shredder's bodyguard
- Karai - Shedder's adopted daughter.
- Rat-King (James Remar)
- Krang (Nolan North) - an alien from Dimension X. He allied himself with Shredder.
- Agent Biship (Steven Blum)
- Triceraton (Kevin Michael Richardson)
Season 1: 2012
|1||Year of the Turtle pt. 1||June 23, 2012||A mutant drum fell into a sewer which transformed 4 turtles and a rat. They become outlaws as they police go after them.|
|2||Year of the Turtle pt. 2||June 30, 2012||The turtles now dubbed as Leonardo, Raphael, Michalangelo and Donatello are trained by the rat now dubbed as Master Splinter into to become ninjas to save the world.|
|3||Year of the Turtle pt. 3||July 7, 2012||The turtles must be fully trained by Master Splinter in order to be ready against a new threat and assassin, known as the Shredder, and his army, the Foot Clan.|
|4||Rise of The Rat King||July 14, 2012||The Turtles encounter a mutant controller known as the Rat King, as he spreads the world with rats.|
|16||Enter Karai||July 29, 2014||The turtles meet Karai, the Shredder's daughter.|