This is the first episode in which Melissa Benoist doesn't appear. It is also the first in which Peta Sergeant (Nyxlygsptlnz) since becoming a series regular. With Benoist's absence, this means that there is no cast member has been 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.
The barn decorations that Kenny set up for Kara is reminiscent of Clark's loft in the barn on Smallville (2001).
It is revealed that Kenny Li, who previously died in the Earth-38 timeline, is alive as a result of Crisis.
This episode features the second lowest number of series regulars at four after Midvale (2017), which only had three.
Querl Dox states his Legion scanner detected a Bismollian energy signature. In the comics, fellow Legionnaire Matter-Eater Lad is Bismollian.