Another new actor has been cast for season 4 of Game of Thrones.

British actor Joseph Gatt, who has had minor roles in Thor and Star Trek Into Darkness, is joining the cast, according to a Wednesday report by The Hollywood Reporter. Though it is unknown as to which role Gatt will be playing, his IMDB page said that he will play Styr, Magnar of Thenn, a wildling leader who teams up with Mance Rayder (Ciarán Hinds). However, IMDB also noted that him playing Styr has not been confirmed.

In A Storm of Swords, the third novel in the A Song of Ice and Fire book series on which the series is based, Styr helps Mance and the wildlings lead the attack on Castle Black against the men of the Night's Watch. Styr is described as very muscular and hairless, which would align with Gatt since the actor was diagnosed with alopecia areata universalis, a condition that causes all of one's hair to fall out.

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Gatt joins Roger Ashton-Griffiths and Pedro Pascal who are joining the already large cast of Game of Thrones next season. Griffiths is playing Mace Tyrell, father to Margaery (Natalie Dormer) and Loras (Finn Jones). Pascal is playing Oberyn Martell/the Red Viper who goes against the Lannisters at the end of A Storm of Swords.

After season 3 adapted two-thirds of A Storm of Swords, season 4 will cover the last third with the potential of covering parts of book 4, A Feast of Crows.

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Season 4 of Game of Thrones is scheduled to premiere in spring 2014. A specific date has not yet been set.

Watch Gatt's acting reel here:

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