Another member of the Inhumans royal family has been cast: Ken Leung (Lost, The Night Shift) has been added as Karnak, the cousin and closest advisor to Black Bolt (Anson Mount).

From ABC: “His gift is an ability to see the fault in all things – people, plans, structures, everything. He’s Black Bolt’s most ardent supporter and strategist and is often seen as the royal family’s planner and philosopher.”

“Ken brings both a wisdom and a power to the role that no one else could match,” said executive producer Jeph Loeb. “His Karnak will be awesome.”

Adds showrunner Scott Buck: “Ken Leung has a great natural intelligence that reads clearly and will add depth and complexity to the very complicated character of Karnak.”

In addition to Leung and Mount, Iwan Rheon (Game of Thrones) will portray Maximus, and Serinda Swan (Ballers) will play Medusa.

Marvel’s Inhumans comes to ABC this fall.