History Recap / Supergirl2015S2E2TheLastChildrenOfKrypton

* ActorAllusion: Alex mentions that she left behind a medical career to become a DEO agent in order to watch over Kara. Chyler Leigh, who plays Alex, previously portrayed Dr. Lexie Grey on ''Series/GreysAnatomy''.
* AdaptationalVillainy: While Cadmus was never portrayed as nice, they were always part of the government in the source material. Here, they ''were'' a government program, but [[FaceHeelTurn have become an outright terrorist group]], filled with nothing but utter hatred for any aliens and {{cult}}-like tendencies.

* BerserkButton: J'onn nearly loses it when Clark accuses him of not caring for Kara as J'onn has made it clear in the past he regards the two Danvers sisters as surrogate daughters, [[PapaWolf and don't anyone dare say he doesn't care for them as if they were]]. Unless you're Superman.
** Touching on this when J'onn warns him to watch it. This only fuels Clark's anger and is only cooled by Alex and Kara.

* EurekaMoment: Winn's offhand comment about it being difficult to calibrate the anti-kryptonite shielding he's making for Supergirl and Superman due to the trace amounts of it around the DEO inspires Alex to realize a way of identifying the mole who handled large quantities of it during the theft that delivered it to Cadmus.

** On the other hand, he also gives its atomic number as 61. Real-world promethium DOES have atomic number 61, but it's spectacularly unsuitable for manufacturing ANYTHING due to its radioactivity.
* HeroicVow: J'onn justifies keeping kryptonite in reserve despite Superman's complaints because he'd watched his family and species destroyed by powerful aliens who landed on his world and he swears that won't happen to ''this'' world on his watch.

* IKnowYourTrueName: J'onn is the only one to call Superman "Kal." Everyone else, calls him "Clark," except Kara in her final goodbye.
* ImpaledWithExtremePrejudice: How the Metallos are defeated. Alex impales the original with a pole, while J'onn phased his hand through the second one's chest.

* KryptoniteProofSuit: Or chest plates, anyway.

* LeaningOnTheFourthWall: Superman departs with a Kryptonian word he claims is best translated as "ToBeContinued".

* NiceGuy: Clark is such a nice guy; he even turns his head when a bank robber tries hitting him, just to soften the damage to the guy's hand.
* NotSoAboveItAll: Heroic Version. Team Krypton is having "#TooMuchFun," to follow DEO instructions, something J'onn isn't too happy about.

-->'''Superman:''' See, now, if it's "the bullets don't work," right? [[FridgeLogic Why the punching?]] ''[[[{{Beat}} throws the thug into a bush]]]'' I never understood that.
* ShoutOut: Winn makes one to Yoda early in the episode. Bonus points in that J'onn and Yoda are both green aliens.
-->'''Winn''': ''(imitating Yoda's voice)'' [[Franchise/StarWars Do or do not, there is no try.]]

** Alex tears into Kara over how she is not only ignoring her while focusing on Clark, but she wants to go to live in Metropolis to be with him, getting away from her. She brings up that she's given up her entire life for her, including dating and her medical career.
** When Winn hears of this, he gives his own example to Alex. Citing his time in a foster home and how he was repeatedly told how lucky he was to have someone to take care of him, he says that family is not about "keeping score", but about loving one another, implying that Alex is also rather [[EntitledToHaveYou entitled]] in thinking she has the right to act that way.

** Not to his face but while chewing Kara out, Alex points out how Clark left Kara in the care of human foster parents who didn't understand her species when he could have taken care of her himself, [[WebVideo/AtopTheFourthWall Linkara]] would be pleased.

* Pieta Plagiarism: Superman carries Supergirl in his arms after the first fight with the first Metallo, in a shot reminiscent of the iconic ''ComicBook/CrisisOnInfiniteEarths'' #7.

* NotAboveIt: Team Krypton is having "#TooMuchFun," to follow DEO instructions, something J'onn isn't too happy about.
* Pieta
Plagiarism: Superman carries Supergirl in his arms after the first fight with the first Metallo, in a shot reminiscent of the iconic ''ComicBook/CrisisOnInfiniteEarths'' #7.

* PietaPlagiarism: Superman carries Supergirl in his arms after the first fight with the first Metallo, in a shot reminiscent of the iconic ''ComicBook/CrisisOnInfiniteEarths'' #7.

* IKnowYourTrueName: J'onn is the only one to call Superman "Kal." Everyone else, including Kara, calls him "Clark."

* BerserkButton: J'onn nearly loses it when Clark accuses him of not caring for Kara as J'onn has made it clear in the past he regards the two Danvers sisters as surrogate daughters, [[PapaWolf and don't anyone dare say he doesn't care for them as if they were]]. [[spoiler: Unless you're Superman.]]

* BerserkButton: J'onn nearly loses it when Clark accuses him of not caring for Kara as J'onn has made it clear in the past he regards the two Danvers sisters as surrogate daughters, [[PapaWolf and don't anyone dare say he doesn't care for them as if they were]]. [[Spoiler Unless you're Superman.]]

* BerserkButton: J'onn nearly loses it when Clark accuses him of not caring for Kara as J'onn has made it clear in the past he regards the two Danvers sisters as surrogate daughters, [[PapaWolf and don't anyone dare say he doesn't care for them as if they were]]. [[Spoiler: Unless you're Superman.]]

* BerserkButton: J'onn nearly loses it when Clark accuses him of not caring for Kara as J'onn has made it clear in the past he regards the two Danvers sisters as surrogate daughters, [[PapaWolf and don't anyone dare say he doesn't care for them as if they were]].

* AdaptationalVillainy: While Cadmus was never portrayed as nice, they were always part of the goverment in the source material. Here, they ''were'' a government program, but [[FaceHeelTurn have become an outright terrorist group]], filled with nothing but utter hatred for any aliens and {{cult}}-like tendencies.

* AttackItsWeakPoint : Both Metallos are defeated by attacking/removing their power source.

* BloodFromTheMouth: The second Metallo starts bleeding some techno-organic gunk when J'onn tears out his Kryptonite core.

[[caption-width-right:350:Where have we seen this before? [[ComicBook/CrisisOnInfineteEarths Hmmm...]]

-->'''Superman:''' Now, see, if the bullets don't work, why the punching? ''({{beat}})'' Never understood that.

* InnocentlyInsensitive: Kara unknowingly takes Alex for granted over her excitement of spending time with Clark.

* TravelingAtTheSpeedOfPlot: Before Kara and Clark heads of to face Metallo the first time they are with Alex in her apartment, dressed in her civilian wear. Next time we see her, she's at the D.E.O. HQ dressed in their uniform. ''Possibly'' justified if her comments in the previous episode that the new HQ is near her apartment are considered.

** Alex tears into Kara over how not only is she ignoring her while focusing on Clark, but that she wants to go to live in Metropolis to be with him, getting away from her. She brings up that she's given up her entire life, including dating and her medical career, for her.
** When Winn hears of this, he gives his own example to Alex. Citing his time in a foster home and how he was repeatedly told how lucky he was to have someone to take care of him, he says that family is not about "keeping score", but about loving one another, implying that Alex is rather [[EntitledToHaveYou entitled]] in thinking she has the right to act that way either.

* {{Irony}}: Cat explains she's leaving [=CatCo=] to explore new opportunities, to dive into new waters. [[RealLifeWritesThePlot Behind the scenes]], the actual reason is that Calista Flockhart actually ''doesn't'' want to leave her home (Los Angeles, where the first season was filmed) and is thus resistant to moving to Vancouver.

* YouAreInCommandNow: Cat leaves the company to Jim in her absence.

* DueToTheDead: When J'onn sees the statues of Jor-El and Lara in the Fortress he gives a short Kryptonian prayer, much to Superman's surprise.

* FreezeFrameBonus: When Winn has identified the location of promethium, the strongest material on Earth, the screen on his computer shows its apparent atomic composition: C[[subscript:12]]H[[subscript:22]]O[[subscript:11]]. Promethium would be better known on our world as "sugar".

* AdaptationalVillainy: While Cadmus was never portrayed as nice, they were always part of the goverment in the source material. Here, they have become an outright terroristic group, filled with nothing but utter hatred for any aliens and {{cult}}-like tendencies.

* BerserkButton: J'onn nearly loses it when Clark accuses him of not caring for Kara as J'onn has made it clear in the past he regards the two Danvers sisters as surrogate daughters.

* HeroicVow: J'onn justifies keeping kryptonite despite Superman's complaints around because he'd watched his family and species destroyed by powerful aliens who landed on his world and he swears that won't happen to this world on his watch.