"Game of Thrones" has cast its Three-Eyed Raven. British actor Struan Rodger will play the part in the fourth season of "GoT" and while the character may not be part of the main storyline this season, he will be important later on for Bran and developments Beyond the Wall.

Warning: Full "Game of Thrones" spoilers ahead.

Rodger was cast as the Three-Eyed Raven, reports HBO Watch, but it is unclear what his role will be in the upcoming season of "GoT." Rodger has appeared in the UK version of "Law and Order" and was the voice for the Face of Boe in "Doctor Who."

The Three-Eyed Raven in HBO's "GoT," known as the Three-Eyed Crow in the "Song of Ice and Fire" series written by George R.R. Martin, has been appearing as a bird in the dreams of Bran, as well as Jojen Reed, but will become a physical character in the fifth novel, "A Dance of Dragons." In the third season of "GoT," Bran had parted ways with Osha and his brother, Rickon Stark, and headed Beyond the Wall to meet the Three-Eyed Raven with Hodor, Jojen and Meera Reed. After separating, Bran meets Samwell Tarley who gives him information about the Wall and what to expect north of it.

In "A Dance of Dragons," Bran finally meets the Three-Eyed Raven, who introduces himself as Brynden. The main fan theory behind Brynden is that he is Lord Brynden Rivers, also known as Bloodraven. Brynden is hundreds of years old and believed to have been the illegitimate son of Aegon IV Targaryen. Brynden was later legitimized and served as the Hand of the King as well as Lord Commander of the Night's Watch.

The Three-Eyed Raven does not manifest as a human in Bran's dreams and HitFix speculates the casting could lead to some changes in his HBO storyline. Very little has happened so far, and the producers may have opted to speed up his trip or introduce the Three-Eyed Raven in other ways.