"Prom Night!" is the fifth episode of the sixth season of Supergirl, and the one-hundred-eleventh episode overall. It aired on April 27, 2021.



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Guest starring





  • This is the first episode of the series to not feature Melissa Benoist (Kara Danvers) and Peta Sergeant (Nyxlygsptlnz) after signing on as series regulars.
    • With Benoist's absence, this means that there is no cast member to be present in every episode of the series. However, Kara Danvers still appears, played by Izabela Vidovic as her 2009 self, and thus remains the only character to be in every episode of the series.
  • This episode features the third least amount of series regulars at four, after "Midvale", which only had three, and the next episode, which only had two.
  • The setting of this episode is May 26, 2009.
  • Querl Dox states his Legion scanner detected a Bismollian energy signature. In the comics, fellow Legionnaire Matter-Eater Lad is Bismollian.
  • It is revealed that Kenny Li, who previously died in the Earth-38 timeline, is alive as a result of Crisis.
  • The aliases Querl and Nia used, "Brandon" and "Brenda", may be a reference to the decade-long television "Beverly Hills 90210".


  • When Brainy and Nia are looking at the future D.E.O. database, after Naxim Tork's status changes from captured to wanted, the words "Naltorian" and "Coluan" on the screen are misspelt as "Noltorian" and "Caluan", respectively.


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