History Recap / Supergirl2015S6E5PromNight

* AbsenteeActor: For the first time, Creator/MelissaBenoist does not appear on a episode of her own show. Nyxlygsptlnz, Lena, Kelly, Andrea, and William also don't appear in this episode.

* TimeShiftedActor: As a result of most of it being set 12 years in the past, Kara and Alex in this episode are played by younger actors, reprising their roles from "[[Recap/Supergirl2015S3E6Midvale Midvale]]". Cat Grant, or CJ as she calls herself in 2009, is also not played by Callista Flockhart, but by Eliza Helm, and Kenny is now played by Peter Sudarso instead of Ivan Mok.

* AerithAndBob: Maxim Tork and Mitch are a very straight example of this. Nia and Brainy also claim to be named "Brendan and Brenda" while trying to pass themselves off as (different) aliens.

* GenreRefugee: Naxim Tork and Mitch's overall aesthetic and personality seem somewhat out of place in the world of ''Supergirl'', and would more closely resemble villains seen in ''Series/LegendsOfTomorrow'', a more comedy-centered series of the Arrowverse.

* TimeShiftedActor: As a result of most of it being set 12 years in the past, Kara and Alex in this episode are played by younger actors, reprising their roles from "[[Recap/Supergirl2015S3E6Midvale Midvale]]". Cat Grant, or CJ as she calls herself in 2009, is also not played by Callista Flockhart, but by Eliza Helm.

* NonStandardCharacterDesign: Naxim Tork and Mitch's overall aesthetic and personality seem somewhat out of place in the world of ''Supergirl'', and would more closely resemble villains seen in ''Series/LegendsOfTomorrow'', a more comedy-centered series of the Arrowverse.

* ClarkKenting: {{Lampshaded}}. Nia and Brainy don glasses for their 2009 disguise, which Brainy calls "the ultimate optical illusion".

** Kenny Li is alive in this timeline, having not been murdered. While originally he and Kara only shared an AlmostKiss and their potential relationship was cut short by his death, in the revised timeline they were boyfriend and girlfriend until Kara left Midvale for college, and amateur sleuths together, with Kenny knowing her secret.
** Kara first experienced Kryptonite as a teenager when she stopped a meteor during prom night, when originally she never heard of it until after she became Supergirl.

* NonStandardCharacterDesign: Naxim Tork and Mitch's overall aesthetic and personality seem somewhat out of place in the world of ''[[Series/Supergirl2015 Supergirl]]'', and would more closely resemble villains seen in ''Series/LegendsOfTomorrow'', a more comedy-centered series of the Arrowverse.

* WhatTheHellHero: Alex blows up at Kara for affecting and endangering the entire family by recklessly using her powers and not thinking of the consequences.

** Kara first experienced Kryptonite as a teenager during prom night, when originally she never heard of it until after she became Supergirl.

* CosmicRetcon: Thanks to the creation of Earth-Prime, Kenny Li is alive in this timeline, having not been murdered. While originally he and Kara only shared an AlmostKiss and their potential relationship was cut short by his death, in the revised timeline they were boyfriend and girlfriend until Kara left Midvale for college, and amateur sleuths together, with Kenny knowing her secret.