Da Vinci's Demons actor Blake Ritson has been cast as Brainiac in SyFy's Krypton, according to Deadline.
Brainiac is one of Superman's oldest enemies, and Deadline reports that he'll also be a villain in the series, set in Krypton's past. Ritson is described as a series regular.
Additionally, Ray Donovan actress Paula Malcomson will take the guest role of Charys, the matriarch of the House of El and mother of Seg-El, Krypton's lead. The role has been recast from the pilot.
Krypton will premiere in 2018.