Season 2
Episode Guide
The Mutation Situation
S2
E1
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.
Invasion of the Squirrelanoids
S2
E2
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 escaping into the city.
Follow the Leader
S2
E3
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 that can adapt to his every move.
Mutagen Man Unleashed
S2
E4
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!
Mikey Gets Shellacne
S2
E5
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.
Target: April O'Neil
S2
E6
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.
Slash and Destroy
S2
E7
The Turtles find themselves being hunted by a new threat-another mutant turtle called Slash, who has a personal vendetta against the brothers.
The Good, The Bad, and Casey Jones
S2
E8
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 other aside and work together against a common foe.
The Kraang Conspiracy
S2
E9
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.
Fungus Humungous
S2
E10
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.
Metalhead Rewired
S2
E11
When Donnie upgrades Metalhead's artificial intelligence, he must decide if he can trust a sentient Metalhead... or if he has created a new foe.
Of Rats and Men
S2
E12
When the Rat King returns, Splinter must overcome his guilt and fear of the Rat King controlling his mind in order to defeat his foe once and for all.
Wormquake!
S2
E13
Facing Shredder's deadly new assassin, Leo must decide whether to risk his brother's lives or ask for Splinter's help. Donnie must put aside his rivalry with Casey in order to uncover a new Kraang plot.
Mazes & Mutants
S2
E14
The Turtles try to relax by playing a fantasy role-playing game, but when the game becomes real, they must learn the difference between fantasy and reality.
The Lonely Mutation of Baxter Stockman
S2
E15
Feeling guilty for turning April's father into a mutant bat, the Turtles perfect a retro-mutagen to help him. Unfortunately, things get worse when Baxter Stockman threatens to mutate April.
Newtralized!
S2
E16
Raph is worried about Casey's ability to handle big mutant threats...when they meet Slash again and discover he has a partner of his own: THE NEWTRALIZER!
Pizza Face
S2
E17
Mikey discovers that a new mutant is trying to attack and capture people using living pizzas, but he struggles to convince the others who don't believe him.
The Wrath of Tiger Claw
S2
E18
Tiger Claw returns and intends to destroy the Turtles at any cost.
The Legend of the Kuro Kabuto
S2
E19
Leo, worried about Karai, tries to convince the others to rescue her. Meanwhile, a master thief steals Shredder's helmet and it falls into the Turtles' unsuspecting hands.
Plan 10
S2
E20
Raph's hot-headed impulsiveness lands him in deep trouble when he accidentally damages a machine that forces him to switch minds with a Kraang.
Vengeance is Mine
S2
E21
Leo goes behind Splinter's back when he stages a rescue for Karai, whose desire for revenge against Shredder brings about grave consequences for them all.
A Chinatown Ghost Story
S2
E22
As Donnie becomes increasingly jealous of April and Casey's relationship, April is kidnapped by an evil spirit who intends to drain April's powers.
Into Dimension X!
S2
E23
At home, Mikey always messes things up, but when the Turtles go to the bizarre realm of Dimension X, he's the only one who can figure the place out.
The Invasion
S2
E24
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.