History NightmareFuel / TeenageMutantNinjaTurtles1987

* Seasons 8-10 of the show is pretty much all of this, considering that this show has always been [[DenserandWackier different]] from the [[ComicBook/TeenageMutantNinjaTurtlesMirage the original source material]], seeing the final 3 seasons of this show shifting into a [[DarkerandEdgier more serious and serialized storyline]] comes to a surprised for those who are familiar with the previous seasons that came before it.

** In a second attempt at the cure, it was a success and all of the Turtles are cured !, except Leonardo. During the stabilization process Dregg's Microbot makes its way to the lair and sabotages the controls while Leonardo was still being stabilized. Leonardo then ends up mutating into an even bigger and more monstrous mutation that leads to him going on a rampage throughout New York city.

* "Enter the Fly" is without a doubt the darkest episode from the original cartoon. Shredder, who's usually apt to take April hostage and place her in all sorts of crazy death traps, instead poisons her and forces the Turtles to seek an antidote, which he then manages to steal and forces them to confront him to get it back. Seeing the Turtles confronted with the fact that April could very well die and seeing her comatose body lie closer to death is disturbing enough.

[[caption-width-right:350: "Say your prayers, Turtles".]]

* Season 9 Episode 7 "Carter, the Enforcer" was also a pretty dark episode in this show. Which two people named Landor and Merrik who came from the future to warned the Turtles about them being killed by their friend and ally Carter, who turns out to be a spy working for Lord Dregg. The Turtles don't believed them at first but then Carter appears out of nowhere and fires repeatedly at them, further supporting this.

** In the Season 10 episode "The Return of Dregg" the Turtles attempt to cure their unstable mutations, until Michelangelo suddenly begins to mutate into a larger more monstrous mutation. The other Turtles and Carter attempt to hold him off with no success, as Michelangelo destroys his brothers' weapons and destroys the machine that's supposed to cure them. He then starts to grow and his ever-increasing body size causes the entire lair to cave-in. [[spoiler: It all turns out to be a virtual reality simulation of what would have happened if they were to use the ray on themselves.]]

** In the Season 10 episode "The Return of Dregg" the Turtles attempt to cure their unstable mutations, until Michelangelo suddenly begins to mutate into a larger more monstrous mutation. The other Turtles and Carter attempt to hold him off with no success, as Michelangelo destroys his brothers' weapons and destroys the ray that's supposed to cure them. He then starts to grow and his ever-increasing body size causes the entire lair to cave-in. [[spoiler: It all turns out to be a virtual reality simulation of what would have happened if they were to use the ray on themselves.]]

* In the final episode of the show "Divide and Conquer" (as pictured above) Michelangelo and Donatello went to Dimension X to retrieve Krang's android body so they could defeat Lord Dregg for good. Once they got into the now abandoned Technodrome, they presumably found the body buried on top of the debris, only for it to be an monstrous alien who happens to look like the android body, complete with a black freaky tongue.

* The first episode of Season 8 titled "Get Shredder" has the Turtles trying to track down Shredder and Kraang, (No more going out for pizza, renting horror movies and going to the arcade) they are REALLY determined to take down Shredhead for good.

* "Enter the Fly" is without a doubt the darkest episode from the original cartoon (barring the [[CerebusSyndrome "Red Sky" episodes"]]. Shredder, who's usually apt to take April hostage and place her in all sorts of crazy death traps, instead poisons her and forces the Turtles to seek an antidote, which he then manages to steal and forces them to confront him to get it back. Seeing the Turtles confronted with the fact that April could very well die and seeing her comatose body lie closer to death is disturbing enough.

* In the final episode of the show "Divide and Conquer" Michelangelo and Donatello went to Dimension X to retrieve Krang's android body so they could defeat Lord Dregg for good. Once they got into the now abandoned Technodrome, they presumably found the body buried on top of the debris, only for it to be an monstrous alien who happens to look like the android body, complete with a black freaky tongue.

* In the final episode of the show "Divide and Conquer" Michelangelo and Donatello went to Dimension X to retrieve Krang's android body so they could defeat Lord Dregg for good. Once they got into the now abandoned Technodrome, they presumably found the body buried on top of the debris, only for it to be an monstrous alien who happens to look like the android body, complete with a black freaky tongue.

-> '''Krang Image''': No, your brain is working perfectly. The turtles have brought their duplicates from the past to destroy you... and destroy you they ''will!''

*** The first one was setting up two subway trains full of people that was about to crash into each other, Raphael and Michelangelo managed to redirect it...[[spoiler: only to discover that it was another set-up and they have just accidentally caused the train to careen down the wrong track]].

* The first episode of Season 8 titled "Get Shredder" has the Turtles trying to track down Shredder and Kraang, (No more going out for pizza, renting horror movies and going to the arcades) they are REALLY determined to take down Shredhead for good.

** In the Season 10 episode "The Return of Dregg" the Turtles attempt to cure their unstable mutations, until Michelangelo suddenly begins to mutate into a larger more monstrous mutation. The other Turtles and Carter attempt to hold him off with no success, as Michelangelo destroys his brothers' weapons and breaks free of attempts to restrain him. His ever-increasing body size causes the entire lair to cave-in. [[spoiler: It all turns out to be a virtual reality simulation of what would have happened if they were to use the ray on themselves.]]

* Starting from Season 9, there is an ongoing plotline where the mutagen that the Turtles originally mutate from proves to be unstable; so much that the Turtles began to suffer from unstable mutations that temporarily transformed them into monstrous hulks with diminished intelligence.

*** What's even worse is that in the next episode, [[spoiler: Lord Dregg is planning to use his plutonium ray to further mutate Leonardo "out of existence". And during the climax, Leonardo got shot from the plutonium ray which causes him to revert to his usual state, Dregg then reveals that the plutonium is causing Leonardo to become even more unstable, meaning that he will reach critical mass and explodes within thirty minutes.]]

** What's even worse is that in the next episode, [[spoilers: Lord Dregg is planning to use his plutonium ray to further mutate Leonardo "out of existence". And during the climax, Leonardo is shot with the plutonium ray which causes him to revert to his usual state, Dregg reveals that the plutonium is causing Leonardo to become even more unstable, meaning that he will reach critical mass and explodes within thirty minutes.]]

** In a second attempt at the cure, the

* Michelangelo's virtual hypermutation in the final season's premiere. He turns into a giant maddened monster with jagged claws, melty flesh, spikes for a shell and hyper aggressive attacks on everyone. And then he gets even worse!
** Leonardo's hypermutated form is not nearly as bad, but it's still pretty grotesque. Especially since Dregg intended to turn him into a walking nuclear bomb.