History NightmareFuel / Supergirl2015

* As M'gann recounts her experience at the White Martians' concentration camps, J'onn understands that she needs more time to cope with being the last survivor of Mars. Little did he know that M'gann herself is a White Martian, the same species that nearly wiped out the Green Martians to near extinction.

* Non's plan from "Myriad" gets taken up to eleven. Before, he was just planning to mind-control everybody on Earth. This time, he means to pull a KillEmAll (which would leave only the aliens with SuperToughness alive) and leave Kara and J'onn alone on a dead planet ([[SoleSurvivor again]]).

* You know Reactron is a nightmare to face when not even Superman himself could defeat a deranged NuclearNasty.

* Non's plan from "Myriad" gets taken UpToEleven. Before, he was just planning to mind-control everybody on Earth. This time, he means to pull a KillEmAll (which would leave only the aliens with SuperToughness alive) and leave Kara and J'onn alone on a dead planet ([[SoleSurvivor again]]).

** Adding more to the AdultFear is Cat's son Carter unwittingly got on Lord's newest train, unaware that there is a bomb planted aboard the train. Imagine if the train exploded with Carter inside, Cat would be devastated as a mother.

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!!Warning: Administrivia/SpoilersOff applies to NightmareFuel pages. Proceed at your own risk.

!! Season 1

* Apparently, Siobhan and her family are cursed by a banshee's hatred to the point where people will suffer; if any of the Smythe women ever felt wronged, the curse will grow until the person who caused the grief dies. In fact, Siobhan's aunt implied that killing someone that is the source of her anger is the only way to quell the banshee curse, and Siobhan's got a dead uncle to prove that it works...

* Barry can now jump between dimensions on his own. Because Zoom is faster than Barry, Zoom probably can jump worlds, too. (Flash has been stating Zoom uses the now-closed portals, but that may be false.) In fact, probably the only reason why Zoom hasn't jumped to National City is Kara's powers don't come from the Speed Force.

!! Season 2

** M'gann's White Martian form is ''terrifying.''

--> '''J'onn:''' You're finally right, Henshaw. I am a monster.

* Considering the fact that Mxyzptlk is a full-on RealityWarper, Mon-El's worry is entirely justified. One shudders to think of what he could've done to Mon-El and to Earth if he were more vengeful and less mischievous.

!! Season 3

* Reign does her take on the iconic shirt-opening...and it's chilling.

* Kara says she believes people will always lean toward the better side of things. Alex responds by showing her that in ''one day'' after Marsdin was outed as an alien, the number of alien hate websites across the country has ''tripled''.

* The Children of Liberty have gone from being an analogue to modern nazi sympathizers to full-on ''nazi'' soldiers and police thanks to their deputization. People are hiding and squatting in their workplaces and in businesses to escape them, making the parallel even stronger, especially since they're. targeting every alien, including those that just have links to aliens.

* Brainy being possessed by the Aurafacian. Its wild, animalistic mannerisms and [[LargeHam bizarre manner of speech]] are much creepier when delivered by Jesse Rath. Hell, calling it "creepy" almost doesn't do it justice.

[[folder: Pilot]]

[[folder: Stronger Together]]

[[folder: Fight or Flight]]

[[folder: How Does She Do It?]]

[[folder: Livewire]]

[[folder:Red Faced]]

[[folder:Human For A Day]]

[[folder:Hostile Takeover]]

[[folder:Blood Bonds]]

[[folder:Childish Things]]

[[folder:Strange Visitor From Another Planet]]

[[folder:Bizarro]]

[[folder: For The Girl Who Has Everything]]

[[folder: Truth, Justice, and the American Way]]

[[folder: Solitude]]

[[folder: Falling]]

[[folder: Manhunter]]

[[folder: World's Finest]]

[[folder: Myriad]]

[[folder: Better Angels]]

[[folder: The Adventures of Supergirl]]

[[folder: The Last Children of Krypton]]

[[folder: Welcome to Earth]]

[[folder: Survivors]]

[[folder: Crossfire]]

[[folder: Changing]]

[[folder: The Darkest Place]]

[[folder: Medusa]]

[[folder: Supergirl Lives]]

[[folder: The Martian Chronicles]]

[[folder: Luthors]]

[[folder: Mr. and Mrs. Mxyzptlk]]

[[folder: Exodus]]

[[folder: Ace Reporter]]

[[folder: Alex]]

[[folder: Triggers]]

[[folder: The Faithful]]

[[folder: Crisis On Earth-X, Part 1]]

[[folder: Reign]]

[[folder: American Alien]]

[[folder: Fallout]]

[[folder: Man of Steel]]

[[folder: Parasite Lost]]

[[folder: Call to Action]]

[[folder: O Brother, Where Art Thou?]]

[[folder: The House of L]]

[[folder: American Dreamer]]

[[folder: Stranger Beside Me]]

[[folder: Blurred Lines]]

[[folder: Dangerous Liaisons]]

* Brainy being possessed by the Aurafacian. Its wild, animalistic mannerisms and bizarre manner of speech are much creepier when delivered by Jesse Rath. Hell, calling it "creepy" almost doesn't do it justice.

[[folder: Dangerous Liasons]]
* Brainy being possessed by the Aurafacian. It's wild, animalistic mannerisms and bizarre manner of speech are much creepier when delivered by Jesse Rath. Hell, calling it creepy almost doesn't do it justice.

[[folder: Dangerous Liasons"]]

!! Season 5

* Eve Tessmacher masqueraded as Lena Luthor's loyal assistant for months before pulling a gun on her at the request of her boss Lex, Lena's abusive brother. There is no question this should make her the scary one. Except when [[spoiler: Lena kidnaps her, keeps her locked in her lab, starts threatening her, not for revenge or because it's useful or for her own protection but because she's become paranoid after too many betrayals and has become obsessed with finding out ''why'' Eve did it. She brutally rejects Eve's FreudianExcuse, and when a genuinely remorseful Eve forgoes an occasion to escape, apologizes and expresses the wish to be better, Lena twists this as a justification to use her nanites to do BrainwashingForTheGreaterGood, essentially turning the horrified Eve into a slave and host for Lena's IA assistant Hope.]]
* Worse still, [[spoiler: Lena plans to do this to all humans, and while she says nothing about forcing them, her actions with Eve don't bode well for her respect of their consent. This shows a clear difference in her stance compared to 4x07, where she insisted to have Adam's consent for a dangerous experiment.]]

* Turns out Eve isn't just brainwashed - Hope has ''completely taken over her body''!
* The Aurafacian. Imagine a spider-like thing going into your body, killing you from the inside, without ''any'' signs of violence.

* The Children of Liberty have gone from being an analogue to modern nazi sympathizers to full-on ''nazi'' soldiers and police thanks to their deputization. People are hiding and squatting in their workplaces and in businesses to escape them, making the parallel even stronger.

* For three seasons, we've known of Lex Luthor in the background, the spector of him only intensifying once Lena debuted. Eventually it was announced we'd get an Earth-38 Lex, catching everyone off guard with the casting of Jon Cryer, known to that point as being the comic relief of ''Film/SupermanIVTheQuestForPeace''. In interviews he said he took the role to try and make up for Superman IV... and he delivered. ''Boy'' did he deliver. This isn't the VillainWithGoodPublicity Lex, he of politics or real estate. This wasn't the ''{{Series/Smallville}}'' Lex at his StartOfDarkness. This was TheUnfettered MadScientist Lex; defined by his hatred for Superman, having lost his reputation and his company, he has nothing to lose. We see it all on display in the flashback that opens the episode. What's his EvilPlan? Turning Earth's sun '''''red''''' just so he can kill ''one person'' regardless of how it'll endanger the rest of the planet. This is unquestionably one of the darkest versions of Lex Luthor ever put to a visual medium.
* In the present, Lex was behind the attack on James, to push Lena to finish her Harun'el Cure. When shooting him wasn't enough to motivate her, he arranged for the hospital to suffer a blackout. Because he wouldn't want to test an unstable cure on ''himself''

* In flashback, Lex is being convicted of mass murder and various other crimes. The judge is sentencing him to "31 consecutive life sentences" when she starts coughing. Lex dryly states "Maybe we should make it 32?" At which point, the judge, jury and prosecutors also start coughing and collapsing as it becomes clear Lex ''poisoned the entire courtroom'' just out of spite.

* This is Lex Luthor's debut episode after being TheGhost for the past three seasons. And this isn't the VillainWithGoodPublicity Lex either, but TheUnfettered MadScientist Lex instead; he can't get back his reputation or his company so he has nothing to lose. We see it all on display in the flashback that opens the episode. What's his EvilPlan? Turning Earth's sun '''''red''''' just so he can kill one person -- Superman regardless of how it'll endanger the rest of the planet.

* In flashback, Lex is being convicted of mass murder and various other crimes. The judge is sentencing him to "32 consecutive life sentences" when she starts coughing. Lex dryly states "why don't we make it 33?" At which point, the judge, jury and prosecutors also start coughing and collapsing as it becomes clear Lex ''poisoned the entire courtroom'' just out of spite.