While trying to foil a Kraang invasion plot, the Turtles are hunted by a giant cockroach. First aired March 15, 2013.
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!!This episode provides examples of:
* AllThereInTheManual: The cockroach was called Chong by the show creators, but he is only called Spy-Roach in the episode.
* BadassBoast: When Raph finally gets tired of running from the Spy-Roach and decides to fight back:
-->"Alright, insect. You think I'm scared of you? I aced your butt twice already. You wanna go for number three?! Well, ''come and get me!''
* BadassBiker: Raph gets his own CoolBike.
* BigCreepyCrawlies: The Spy Roach. It gets even creepier when it molts.
* BreatherEpisode: After "[[WhamEpisode TCRI]]".
* CallBack: The Turtles use the Shellraiser again.
* CoolBike: Raph gets to ride a tricked out motorcycle.
* CreateYourOwnVillain: Spy-Roach's hatred of Raphael was born out of Raphael's attempts to kill it when it was a normal roach.
** And it's only mutated because the turtles were fighting with the controller, and it fell into ooze when they sent it to a Kraang base.
* CurbStompBattle: Fights with Spy-Roach tend to end this way.
* {{Cyborg}}: Spy-Roach's mutation causes the technology Donatello outfitted it with to merge with it.
* {{Determinator}}[=/=]TheUnfettered: Spy-Roach.
* ExplainExplainOhCrap: Leo explaining to Raph why cockroaches molt. Cue the bigger, badder, uglier, flight-capable Spy-Roach appearing right behind them.
* FaceYourFears: Raph is forced to do this.
* {{Foreshadowing}}: The Kraang talking about their Gluten-Free diet, when you take into account that Irma in Season 2 has that same diet.
* FromASingleCell: After being melted by the Kraang's laser drill, a new Spy-Roach begins to form from the slimy remains.
* GirlyScream: Raph does this several times throughout the episode.
* GoodOldFisticuffs: By the end of the episode, Raphael gets so pissed off that he resorts to trading punches with Spy Roach.
* GotMeDoingIt: Leo briefly catches himself using the Kraang's roundabout speech patterns after the lead Kraang's extensive rebuttal to being told to halt.
* GroinAttack: Raph shoots a sewer lid right between the legs of an unconscious Spy-Roach.
* HopeSpot: Donnie and Mikey have the Spy Roach on the ropes with a dazzling display of teamwork... and a can of insecticide. When they go in for the finishing blow, the can runs out. [[SubvertedTrope And then the Spy Roach is hit by a speeding truck.]] [[ZigZaggingTrope Please note that, being a cockroach, this fails to do any lasting damage.]]
* [[ImplacableMan Implacable Roach]]: Spy Roach has only one goal in mind; kill Raph, and little things like getting hit by a van, run over by a bike, and shot with manhole covers aren't gonna stop him.
* IdiotBall: When Spy Roach keeps finding and attacking the turtles, Donnie offhandedly mentions that maybe Spy Roach is using the homing signal he setup to help Spy Roach find his way back before he was mutated. Everyone else is shocked since he never mentioned a homing signal before, and even Mikey states that even ''he'' would have known to turn that off.
* {{Irony}}: The fact that Raphael is being hunted by a cockroach which he's afraid of. He even lampshades the trope.
* LudicrousGibs: Raphael finally destroys Spy-Roach by directing the Kraang's laser-drill at it, which causes it to [[{{Squick}} explode in a shower of slime.]] This doesn't destroy it for good though. Raphael invoked The ChunkySalsaRule with this one, the roach covered in goo and roaring just before the end could be a SequelHook signaling it's return, but we haven't seen The Cockroach Terminator again
* MadeOfIron: Spy Roach survives getting run over by Shellraiser, among other things.
* [[ManBitesMan Mutant Turtle Bites Giant Mutant Roach]]: During their fight on The Krang's Laser Cannon Raphael bites The Cockroach Terminator on its leg. He promptly spits in disgust afterwards.
* NiceJobBreakingItHero: Raph, for trying to kill the Spy-Roach during his first encounter with it, and Donnie for (unintentionally) making the Spy-Roach fall into the mutagen and letting it mutate.
* NighInvulnerability: As Donatello explicitly points out in the episode, cockroaches are a deceptively durable species. Spy-Roach's mutation just took it up to eleven, with him able to NoSell almost everything thrown at him.
* NotQuiteDead: Spy-Roach.
* OhCrap: Raphael said this when he discovers he's the reason the Spy-Roach is pursuing him. Well, "crap" isn't a G-rated word, so we have this:
--> "Oh crud."
* OneWingedAngel: After molting, Spy-Roach becomes bigger, stronger, and capable of {{Flight}}
* OrganicTechnology: Spy-Roach becomes this when it falls into the ooze (fusing its body with Donatello's tech).
* OutOfTheInferno: Spy Roach after being hit by the truck, which crashed into a building and exploded.
* PintSizedPowerhouse: Spy Roach is shorter than all the Turtles, but has no trouble pounding them all.
* RedEyesTakeWarning: The spy-camera it wears over one eye has a red lens.
* RoaringRampageOfRevenge: Spy-Roach against Raphael, since Raph tried to kill him in the opening scene.
* ShoutOut: Numerous references to the ''Franchise/{{Terminator}}'' movies.
* TemptingFate: After learning why the Spy-Roach is after them we get this little number from Raph:
-->'''Raph:''' Irony, got it thanks! So are there any more surprises?\\
''[Spy-Roach's sawblade bursts through the Shellraiser's floorboard right in front of Raph]''\\
'''Raph:''' ''[Scared out of his wits]'' HE HAS A '''''SAW!?!?'''''
* ThisIsGonnaSuck:
-->'''Raph:''' This is either gonna be really cool, or really painful.\\
''[rams the Spy-Roach in the face with his bike, using it as ramp to jump into the Kraang base]''\\
'''Raph:''' Okay, it was both.
* ATwinkleInTheSky: Happens to a football helmet after Raph throws it at the Spy-Roach, whereupon the helmet bounces off it harmlessly.
* VerbThis: Raph to the Spy-Roach as he takes it out with the Kraang laser drill:
--> '''Raph''': Drill THIS!
* WeaksauceWeakness: Despite Spy-Roach's enhanced toughness brought upon by his mutation, he is still vulnerable to a common spray can of insecticide. [[JustifiedTrope Justified]] since he's still a roach in the same way the Turtles [[Recap/TeenageMutantNinjaTurtles2012S1E17TCRI can hold their breath for a significant duration of time]].
* [[WhyDidItHaveToBeSnakes Why Did It Have to Be a Cockroach?]]: Raph is afraid of roaches, and he says this exact line multiple times.
* YouHaveGotToBeKiddingMe: Raph's word-for-world reaction when the Spy-Roach once again comes back for more on top of the Kraang laser drill.