Ray Donovan's Paula Malcomson and Da Vinci’s Demons' Blake Ritson have joined the cast of Krypton, the upcoming DC Comics-based prequel series that centers on the life of Superman's grandfather on his titular planet, in addition to the likes of Adam Strange and Hawkwoman.

According to Deadline, Ritson has been tapped to play the central villain of the series, longtime Superman foe Brainiac. Meanwhile, Malcomson will portray Charys, "the matriarch of House El."

Paula Malcomson and Blake Ritson

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Teasing the plot of the series, DC Entertainment President and Chief Creative Officer Geoff Johns revealed back in July that the show would jump between time periods, unraveling a “conspiracy.” “It’s a show that, although it takes place centuries ago on Krypton about the House of El, it’s about a conspiracy from the present that has traveled back in time to to Krypton to prevent Superman’s legacy from ever happening."

“Adam Strange and Hawkwoman come to Krypton trying to stop the conspiracy and save Superman’s legacy,” Johns announced. “Doomsday will be in the show. Brainiac is long overdue to be on screen like that.”

Krypton will star Cameron Cuffe (Time After Time), Georgina Campbell (Broadchurch), Elliot Cowan (Da Vinci’s Demons), Ann Ogbomo (World War Z), Rasmus Hardiker (Your Highness), Wallis Day (Will), Aaron Pierre (Tennison) with Ian McElhinney (Game of Thrones).