Some more casting news for you, courtesy once again of James Hibberd at Entertainment Weekly, Sherlock star Mark Gatiss has been cast in season 4 of Game of Thrones. What role? Well, that is being held under wraps for now, but if I had to guess I’d say this is our Mace Tyrell.

In addition to appearing on Sherlock, Gatiss is also co-creator of the BBC series. Before that, he wrote and appeared in numerous episodes of Doctor Who. Which I guess ranks him up there with Nathan Fillion and Benedict Cumberbatch when it comes to geek credentials.

Winter Is Coming: I have to admit, I’ve never heard of Gatiss before. But it sounds like his resume is pretty impressive. I’m happy to have him on board, in whatever role it may be!

UPDATE: In an Access Hollywood interview at Comic Con (I can’t actually find it on the ‘net yet), Gatiss was cornered by a reporter. He refused to name what character he is playing, but hinted he would need a Northern Irish accent for it and “a bit of hair.” A wig, obviously! He also said that his audition called for him learning a large number of names. My guess? If I have to take a stab, I think he’s playing the amalgamation of two Greyjoys, possibly Euron and Victarion. (Vicuron?) My second guess would be someone at Castle Black reading off a scroll of names. Hopefully we’ll know more tomorrow! ~FaB~

SECOND UPDATE: HERE’S THE VIDEO! He says he’s already filmed his parts! Innnnteresting.