Showtime has announced “Californication” star Natascha McElhone is set to join its upcoming original sci-fi series “Halo.” Based on the bestselling 343 Industries video game for Xbox 360, the show follows an interstellar war between humanity and alien assholes.

McElhone has been cast in a dual role as Dr. Catherine Halsey, the brilliant and hot creator of the Spartan supersoldiers, and Cortana, the most advanced and hottest looking AI ever manufactured. Cameras roll in Budapest this year for slated release in 2021.

McElhone, who starred in 2002’s FeardotCom and Steven Soderbergh’s Solaris, is best known for her roles as Karen van der Beek, Hank Moody’s (David Duchovny) ex-wife, on the Showtime dramedy “Californication” and the First Lady on Fox’s “Designated Survivor.”