According to Deadline, Campbell will play Lyta Zod, a member of Krypton’s military caste and daughter to General Alura Zod. As part of the plot Lyta Zod has been having a clandestine romance with Seg-El, who is Superman’s grandfather. Seg-El is fighting to restore the honor of the House of El while also saving the planet from chaos.
Campbell is a British actress who has appeared in After Hours, One of Us, and Murdered by My Boyfriend. The pilot for Krypton was greenlit in May (see "Syfy Greenlights 'Krypton'"). The pilot will be filmed in Serbia.