Character
Alex Luthor Flashback, Hellgrammite (Flashback) (Cameo) (Villain), Gretchen Kelley (Villain), Martha Kent, Roderick Rose (Flashback) (Cameo) (Villain), Cameo, Lex Luthor (Villain), Matrix, Supergirl, Jonathan Kent, Superman (Flashback) (Cameo), Sydney Happersen (Villain), Clark Kent (Flashback) (Cameo), Supergirl Clones