HBO's "Game of Thrones" has added "UnREAL" star Freddie Stroma to its cast for season six, TVLine.com reported. He will be portraying Samwell Tarly's brother, Dickon.

Dickon is Sam's more traditional brother in that he can swing a sword and hold up physically. As Sam is now a member of the Night's Watch, Dickon has become the heir in House Tarly.

In addition to the TV sleeper hit "UnREAL," Stroma has also been featured in three "Harry Potter" films and this summer's critical and financial success "Pitch Perfect 2."

Earlier this year, Stroma told TVLine that he would likely not be a part of "UnREAL's" second season, though producers claimed that nothing had been set in stone. His participation in the upcoming season of "Game of Thrones" will likely prevent him from appearing, though.

Season six of "Game of Thrones" will premiere sometime in 2016.