This episode 13 was dedicated to Courtney Elizabeth Johns, sister of comic book artist Geoff Johns who based the superhero character 'Stargirl' on her. When Brec Bassinger pins her Christmas family photo on her photo collage wall, Courtney's picture is also shown at the lower right side of the screen.
The final scene of the season was originally planned for the Pilot episode. Brec Bassinger described that as, "a scene that was originally written in the pilot. But it didn't make sense yet. It's in this, it's the very, very last scene of the season. It's so beautiful.". The final scene in question may include Starman and the original JSA.
This is the first episode in which Courtney refers to herself as Pat's daughter. Likewise, Pat refers to Courtney as his and Barbara's daughter for the first time.
Eclipso is teased, with Cindy finding a blue diamond that has his life essence inside. The essence laughs sinisterly. In the comics, Eclipso is the spirit of God's wrath who fell to become an agent of chaos. He possesses others to carry out his nefarious deeds.
Yolanda Montez mistakenly called Justin "Silent Knight". In the comics, Silent Knight's real identity was Brian Kent, one of Hawkman's reincarnations from the 6th century and one of the Knights of the Round Table.