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Michelangelo is tired of being the runt of the litter. But when he fools around with some mutagen, he gets a dangerous infection that is mutating out of control.
All Episodes - S02
EPS01
When Shredder teams with the Kraang to receive a batch of mutagen, the Turtles' problems only get worse--even putting their friendship with April at stake. ...
EPS02
While tracking mutagen, the Turtles bring a mutated squirrel back to the lair. When it starts multiplying, the Turtles must hunt the squirrel mutants and prevent them esc ...
EPS03
When the Turtles face Shredder's newest threat, an army of Robot Foot Soldiers, Karai captures Leonardo and forces him to do battle with these new and improved ninjas tha ...
EPS04
Donatello obsessively experiments with mutagen in a bid to find a cure for April's mutated father. Unfortunately this puts April in danger from a new threat--Mutagen Man! ...
EPS05
Michelangelo is tired of being the runt of the litter. But when he fools around with some mutagen, he gets a dangerous infection that is mutating out of control. ...
EPS06
April tries to resume a normal teenage life, but when Karai starts hunting her again, April realizes she may have put her new friend Casey Jones in danger as well. ...
EPS08
After encountering mutants and ninjas, Casey Jones decides to take on pure evil alone. When he meets Raphael, the two hot-headed fighters must put their dislike for each ...
EPS09
Feeling left out of the action, April insists on joining the Turtles on a mission to TCRI, where they learn a shocking secret about April's past. ...
EPS10
A fungus mutant spreading through the sewers causes the Turtles and April to experience their worst fears as Leonardo must face his greatest fear--losing his team. ...
EPS13
Leonardo considers asking Splinter for help while facing Shredder's new assassin; Donnie must put aside his rivalry with Casey in order to uncover a Kraang plot. ...
EPS19
When Tiger Claw returns, he vows to hunt and destroy the turtles. Meanwhile, Karai finds out the truth about her mother and real father, forcing her to make a life changi ...
EPS21
When Raph accidentally damages a Kraang machine, it allows him to switch brains with a Kraang. Now he must find a way to convince his brothers and Splinter that it's real ...
EPS23
Donnie becomes increasingly jealous of April and Casey's relationship; April is kidnapped by an evil spirit who intends to drain her powers. ...
EPS24
After Mikey gets trapped in Dimension X to try and save Leatherhead, his brothers come to his rescue, but they discover that their little brother has changed. ...
EPS25
Leo and Donnie disagree about their plan to stop the Kraang invasion. When Leo makes a critical mistake, he is separated from the team and Donnie must step up as a leader ...