Allusions to the DC Universe

Below is a list of characters, locations, etc., which originally appear in the DC Comics multiverse prior to the episode's airing, by appearance.

DC Characters

 * 1) Jor-El
 * 2) Lara Van-El
 * 3) Kal-El/Clark Kent/Superman
 * 4) Zor-El
 * 5) Kara Zor-El/Kara Danvers/Supergirl
 * 6) Alura Zor-El
 * 7) Cat Grant
 * 8) James "Jimmy" Olsen
 * 9) Vartox
 * 10) Hank Henshaw
 * 11) Maxwell Lord
 * 12) Hellgrammite
 * 13) Gor
 * 14) Mur
 * 15) Ben Krull/Reactron
 * 16) Lucy Lane
 * 17) Leslie Willis/Livewire

Referenced characters

 * 1) Lois Lane
 * 2) Perry White

Upcoming Characters

 * Red Tornado
 * T.O. Morrow (unknown episode)
 * Sam Lane
 * Jemm
 * Non (unknown episode)
 * Winslow Schott/Toyman (unknown episode) *
 * Cameron Chase (unknown episode)

Notes:
 * 1) Even though Winslow is the actual version of Toyman in Supergirl, Winslow "Winn" Schott Jr., who is in part an original character specifically created for the show, is also based in part on the same character.

DC Locations

 * 1) Krypton
 * 2) Phantom Zone
 * 3) Fort Rozz

Referenced Locations

 * 1) Daily Planet
 * 2) Metropolis
 * 3) Fortress of Solitude

DC Objects

 * 1) Green Kryptonite
 * 2) Reactron suit
 * 3) Jimmy Olsen's Signal Watch