History Recap / Supergirl2015S4E21RedDawn

* RealityEnsues: Just like Brainy said, Lockwood is slowly dying because of injecting himself with the undiluted Harun-El Serum and is barely keeping himself going with continued injections.

* NotSoDifferent: Red Daughter brings the trope up and mocks it when Kara tries to pull it on her.

* FamousLastWords: What are Otis' last words? "Harsh, bro."

* ObliviousToTheirOwnDescription: Almost every criticism Red Daughter throws at Kara in this episode applies equally, if not moreso, to her.

* ViolentlyProtectiveGirlfriend: Lena is willing to poison her mother to make her comply in saving James. Lillian assumes it was a bluff, but Lena's insistence that Lillian drink the antidote indicates she really did poison her.

* IJustWantToBeYou: Red Daughter has modeled her apartment to be a replica of Kara's own, has gotten clothes similar to the ones that Kara uses, and even visits Eliza to try and emulate Kara better. Kara calls her out on this despite Red Daughters protests to the contrary.
* IKnowMortalKombat: Dreamer and J'onn think they can [[TrojanPrisoner sneak into the facility]] the same way [[Film/ANewHope Luke, Han, and Chewie snuck into the Death Star]]. Brainy even [[NeverTellMeTheOdds calculates the odds of success]].

* MajorInjuryUnderreaction: Otis' response to Lockwood ripping out his Kryptonite heart is a mildly surprised "harsh, bro".

* OhCrap: Just when Kara has knocked out the guards, Red Daughter appears, with kryptonite.

** Dreamer suggests doing this to get into the alien detention facility, she calls this a ''Wookie Gambit'' (the former name of this trope), in reference to ''Star Wars''. She and Brainy are almost immediately caught when they try.

* VillainBall: Despite having Kara at her mercy at the start of the episode with a Kryptonite collar around her double's neck, Red Daughter decides to mock Kara's philosophy and tell her that she is an indoctrinated tool instead of shooting her like she was ordered to do. Even if she wasn't aware [[AcquiredPoisonImmunity of Kara's tolerance to Kryptonite]], considering the fact that they have similar physiologies, walking right up to Kara, and therefore to the collar, is pretty stupid, and it weakens Red Daughter enough for Kara to escape.

* DidYouReallyBelieve: Invoked by Lena on how Lockwood never wondered how in just a year he went from an out of work college professor to a Cabinet member with superpowers.

** Dreamer suggests doing this to get into the alien detention facility, she calls this a ''Wookie Gambit'', in reference to ''Star Wars''. She and Brainy are almost immediately caught when they try.

* AnOfferYouCantRefuse: Lena poisons her mom to make her comply in finding a cure for the Harun-El.

* BaitAndSwitch: For poor Nia when Brainy breaks in to the shipping container she is being held in and tells her that he has something important to tell her she is clearly excided and thinks he's about to reveal his feelings for her... unfortunately since Brainy's been rebooted he instead tells her that he is not going to release her and will allow her to be captured so she can find out where the transmat portal goes.

* EurekaMoment: Lena deduces that Lockwood must be connected to Lex, after she hears that he took the Harun-El. The only thing she gets wrong is thinking it's a ''willing'' cooperation.

* IJustWantToBeYou: Red Daughter has modelled her apartment to be a replica of Kara's own, has gotten clothes similar to the ones that Kara uses, and even visits Eliza to try and emulate Kara better. Kara calls her out on this despite Red Daughters protests to the contrary.

* IdiotBall: Brainy and Dreamer try to walk into an Alien Affairs detention facility with him disguised as Lockwood. It takes less than a minute before they're found out and captured.

* MythologyGag: Kara manages to narrowly avoid death by drawing sunlight from nearby plants, just as Superman did ''ComicBook/TheDarkKnightReturns''.

* StalkerWithoutACrush: Red Daughter has been staking out Kara's apartment through her own across the street and has even modelled the inside to resemble Kara's own décor.

* YouHaveGotToBeKiddingMe: Lockwood's reaction when he hears that Lex's plan is basically just about money...and world domination!

* CannotSpitItOut: Brainy wants to tell Nia that he loves her, but throughout the episode he either can't bring himself to do it or a distraction comes up. And sadly, it is then too later after his reboot.