The Inhumans have found their leader: Hell on Wheels star Anson Mount has joined the cast of Marvel’s upcoming superhero series.

Mount will play Black Bolt — the enigmatic, commanding King of the Inhumans, with a voice so powerful that the slightest whisper can destroy a city.

“Anson loves the challenge of playing a character who will only communicate silently,” said Jeph Loeb, Head of Marvel Television. “His enthusiasm mixed with his imposing almost regal persona made it easy to see why he is our Black Bolt.”

Added showrunner Scott Buck: “Black Bolt is a character whose deep complexity must be conveyed without uttering a single word, and I’m very excited to have Anson on board to bring him to life.”

Mount joins an ensemble cast that includes Iwan Rheon (Game of Thrones) as Maximus, Black Bolt’s brother — a clever and charming Inhuman who harbors an intense desire to wear the crown himself.