The role of Mero has been cast! According to WinterIsComing English actor Mark Killen will be protraying Mero!
Mero is described as a Braavosi nicknamed the Titan’s Bastard, is captain of a sellsword company called the Second Sons. Daenerys meets the captain during her travels in Essos. Mark Killen is rumoured to make his first appearance on the Game of Thrones in episode 8 of the show's third season. His first episode will most likely late May/early June.
Mark killen has appeared in The Dark Knight Rises, Rise of the Footsoldier, and the upcoming sequel, 300:Rise of an Empire, Doctor Who and Waking the Dead.
Game of Thrones Season 3 premieres March 31, 2013