Russian actor Yuri Kolokolnikov has been cast on "Game Of Thrones" as Styr, the leader of the Thenn, EW reports.
The Thenn tribe live beyond the Wall in the George R.R. Martin book series. Kolokolnikov has been in various films in his native Russia, but isn't widely known to audiences in the US.
The casting of Styr is just the latest news announced for the upcoming season. Actor Pedro Pascal has been cast as Prince Oberyn Martell, who is known as "The Red Viper" to fans. He plays a Prince who is "charming, yet believably dangerous; intensely likable, yet driven by hate," according to showrunners David Benioff and Dan Weiss.
The fourth season of "Game of Thrones" will premiere in 2014 on HBO.