History Recap / Supergirl2015S1E16Falling

* ExactWords: "Nothing on Earth can stop me". Cue J'onn...

* CurbStompBattle: Kara is on both ends of this, effortlessly taking down the K'hund, and getting trounced in the climax by J'onn

* WhamEpisode: J'onn exposes himself as an alien publicly, leading to him getting imprisoned at the DEO. Additionally, promos for the following week indicate that Supergirl will have to face the fallout of her actions in this episode.

* AdaptationNameChange: A minor example: the alien species "Khund" is here known as "K'hund".

* TemptingFate: During her final rant, Kara states that no one on earth can stop her, cue Martian Manhunter.

* RecycledScript: The episode's premise is quite similar to [[Recap/TheFlash2014S1E8FlashVsArrow an early episode]] of ''Series/TheFlash2014'' (complete with a showdown between heroes), although Red Krypotnite has existed in the Superman mythos for quite awhile.

* LastSecondWordSwap: Cat calls Siobhan a "backstabbing, opportunistic little...imp" in a tone that implies that she would very much like to substitute that last word with something decidedly less polite.

* TemptingFate: During her final rant Kara states that no one on earth can stop her, cue Martian Manhunter.

* JerkassHasAPoint: A core theme throughout the episode; many of Bad Supergirl's criticisms toward her friends and family have a certain degree of validity to them.

* BeCarefulWhatYouWishFor: As Alex lampshades, Max, by accident, has managed to turn Supergirl into the very threat he thought she was.

* BecameTheirOwnAntithesis: Kara's behaviour at CatCo and her actions toward Siobhan are very much like how Siobhan herself was [[Recap/Supergirl2015S1E14TruthJusticeAndTheAmericanWay when she was introduced]].

* EvilCostumeSwitch: At CatCo, Kara starts dressing in an outfit similar to Cat, and as Supergirl, she eventually switches to an outfit evocative of her late aunt.

* OutOfCharacterMoment: Max actually being remorseful for creating the red Kryptonite and then willingly working with the DEO on a way to fix it does seem out of character for him based on his past attitude toward Supergirl, particularly during ''[[Recap/Supergirl2015S1E12Bizarro Bizarro]]''.

* StartOfDarkness: Siobhan getting fired by Cat is implied to set up Siobhan to become Silver Banshee just like how Leslie becomes Livewire.

* StartOfDarkness: Siobhan getting fired by Cat is implied to set up Siobhan to become Silver Banshee just like how Leslie becomes Livewire.

* SpoilerOpening: Peter Facinelli being listed in the opening credits is a major clue that Max is responsible for the whole mess. Surprisingly, though, it was actually an accident--he was trying to make ''green'' Kryptonite, and to target Non's crew.

* SpoilerOpening: Peter Facinelli being listed in the opening credits is a major clue that he's responsible for the whole mess. Surprisingly, though, it was actually an accident--he was trying to make ''green'' Kryptonite, and to target Non's crew.

* OutOfCharacterMoment: Max actually being remorseful for creating the Red Kryptonite and then willingly working with the DEO on a way to fix it does seem out of character for him based on his past attitude toward Supergirl, particularly during ''[[Recap/Supergirl2015S1E12Bizarro Bizarro]]''.
* RecycledScript: The episode's premise is quite similar to [[Recap/TheFlash2014S1E8FlashVsArrow an early episode]] of ''Series/TheFlash2014'' (complete with a showdown between heroes), although Red Krpyotnite has existed in the Superman mythos for quite awhile.

* {{Squick}}: Kara was horrified after using X-ray vision to see Winn and Siobhan getting real close and intimate inside a closet.