History Recap / Supergirl2015S5E9CrisisOnInfiniteEarthsHourOne

* AbsenteeActor: Eve (Creator/AndreaBrooks), Andrea (Creator/JulieGonzalo) and William (Staz Nair) are absent during the episode.

* AdultFear: In a cruel way of HistoryRepeats, Lois and Clark are forced to send off their only child into space with a pod. Fortunately, not only do they survive, but they also manage to track him down fast.

** Clark and Lois in Argo with baby Jonathan, acting like a typical family, is actually heartwarming... until they see the red sky and Kara sends them a message warning them of the antimatter wave.

* InconvenientSummon: Harbinger pulls Batwoman to Earth-38 just as she was interrogating a Wonderland mook for the location of Alice. She's not happy with her about it and punches her once the surprise of the teleportation wears off.

* SpannerInTheWorks: Harbinger pulls Batwoman to Earth-38 just as she was interrogating a Wonderland mook for the location of Alice. She's not happy with her about it and punches her once the surprise of the teleportation wears off.

!!Tropes

-->'''Ray''': Oh, so cool. Incredibly balanced. Carbon fiber?\\
'''Mia''': Your friend talks a lot.\\
'''Oliver''': Yeah, you get used to it. Hey, Ray! Focus!\\
'''Ray''': Focusing!

** During one bar's trivia night, the host asks the name of Music/JanisJoplin's last song. Sara gives an incorrect answer due to Ray screwing with history during “The Virgin Gary”.

** Creator/AlanRitchson and Curran Walters reprise their roles as Hawk and Robin from ''[[Series/Titans2018 Titans]]'' through manipulated StockFootage. It is confirmed their Earth is Earth-9.

* ContinuitySnarl: While the writers apparently attempt to ''solve'' one, with declaring the events of ''[[Recap/LegendsOfTomorrowS1E6StarCity2046 Star City 2046]]'' to have happened on Earth-16, there are still things that don't match, only explainable by saying that the characters themselves are wrong about their assumption of them being one and the same. Oliver seems to be much younger than he appeared in that episode and he not only does not remember meeting Sara then ([[NonLinearCharacter which both might be explained by her appearing earlier in his timeline]]), but he thinks she died when the ''Queen's Gambit'' was sunk, meaning she wasn't even part of the events with Anthony Ivo in the Season Two flashbacks for ''Arrow''. Worth mentioning is that Sara is also confused that this Oliver doesn't remember her, implying that this future may not be exactly the same one that appeared in ''Legends''.

-->'''Sara''': You've gotta be kidding me.\\
'''Lois''': What are the odds that my son's pod landed here?\\
'''Brainy''': 3,827,000,000 to one. [[DownplayedTrope But the pod didn't land here]].

* DiggingYourselfDeeper: Alex's attempt at begging Lena for help doesn't do her many favours; Lena would have helped regardless of her personal feelings, and she's offended at the idea that Alex thinks otherwise.

* FiveSecondForeshadowing: Just before Argo City is engulfed in the wave, Lois and Kal are surrounded by an energy wave. Later, they appear in DEO headquarters, saved by Harbinger.

--->'''Kate''': You can all just call me Kate.\\
'''Oliver''': Yeah, yeah, that makes a lot of sense.\\
'''Mia''': I'm Mia. I'm Oliver's daughter.\\
'''J'onn''': I never knew he had a daughter.\\
'''Mia''': [[DeadpanSnarker He gets that a lot]].

-->'''Dick Grayson:''' HOLY CRIMSON SKIES OF DEATH!!!
** Clark and Lois in Argo with baby Jonathan, acting like a typical family, is actually heartwarming...until they see the red sky and Kara sends them a message warning them of the antimatter wave.

* MusicalNod: A fraction of the Danny Elfman ''Film/Batman1989'' score plays as Earth-89 is shown. Similarly, the famous theme from the [[Series/Batman1966 Adam West series]] plays when we cut to Earth-66.
* MusicalSpoiler: The score playing right before Oliver's last stand is similar to what played before Tommy Merlyn's sacrifice to save Earth-1 Laurel Lance in ''Series/{{Arrow}}'s'' [[Recap/ArrowS1E23Sacrifice first season finale]], tipping viewers off to Oliver's fate.

** Burt Ward, who played Robin in ''Series/Batman1966'', is shown as a resident of Earth-66 and utters a variation of his catchphrase ("Holy crimson skies of death!").
** Earth-89 features a newspaper with the headline “Batman captures Joker”. Joker was the main villain of ''Film/Batman1989''.

** Much like Earth-38 was named for the year ''Franchise/{{Superman}}'' first appeared in comics, three of the alternative Earths follow the same convention: Earths 16 & 66 are named for the years in which ''Series/LegendsOfTomorrow'' & ''Series/Batman1966'' first aired, whilst Earth-89 is named for the year of the theatrical release of ''Film/Batman1989''.

* RealityEnsues:
** As hard as the heroes fight, they can't hold out against the endless hordes of shadow demons forever; they lose the fight by sheer numbers and the Monitor is forced to remove them so as to have a chance in the future.
** When using their heat vision to restore power to the quantum tower, Kal passes out before Kara, since he's been more than a year without powers and doesn't have as much stored solar energy.
** Evacuating an entire planet, even with the means to do so, is no small task; in the end, only 3 billion of Earth-38's 7.53 billion population are saved, and a billion of those only survived because of Oliver's HeroicSacrifice.
** A BadassNormal is no match against an army of supernatural creatures, especially once he runs out of weapons beyond his bare hands.

** Sara's first question when Harbinger appears in a flash of light is "what's with the suit?".

* WhamEpisode: Earth-38 & Argo City are destroyed, with only two-fifths of that Earth's population surviving; Oliver Queen of Earth-1 dies making sure as many people make it off Earth-38 as possible.