Another star is added to the upcoming sixth season of "Game of Thrones". Freddie Stroma, who plays the rich British playboy Adam Cromwell on Lifetime's series "UnREAL", is tapped to portray Samwell Tarly's younger brother, Dickon, AceShowbiz reports.

In the George R.R. Martin novels, Dickon is made heir by their ruthless father, Randyll, who forced Sam to leave the family and join the Night's Watch. Samwell is played by John Bradley-West on the show while Lord Randyll hasn't been cast just yet.

Stroma joins new members Pilou Asbæk, Ian McShane, and Max von Sydow. It's unclear what role McShane will be playing but von Sydow is set to portray the Three-Eyed Raven, who was previously played by Struan Rodger, and Asbæk is expected to play Euron Greyjoy.