AceShowbiz -

"Game of Thrones" has found its Prince Oberyn Martell a.k.a. Red Viper. Chilean actor Pedro Pascal is cast in the pivotal role for the upcoming season 4 of the hit medieval series. "This was a tough one," showrunners David Benioff and Dan Weiss tell Entertainment Weekly about the casting.

They further gush, "The Red Viper is sexy and charming, yet believably dangerous; intensely likable, yet driven by hate. The boys love him, the girls love him, and he loves them all back. Unless your last name is Lannister. We found a fellow who can handle the job description and make it seem effortless. He wasn't easy to find and he won't be easy to stop."

Prince Oberyn is a brash and cunning prince of Dorne, whose sister Elia was murdered by Gregor "The Mountain" Clegane, a Lannister knight, when Robert Baratheon and the Lannisters overthrew Mad King Aerys. He'll come to Kings Landing seeking revenge. His appearance hints at the return of The Mountain.

Pascal has previously landed roles on "The Good Wife", "Brothers & Sisters", "Body of Proof", "Nikita", "Red Widow" and "Graceland" among many other TV series. He also appeared in Matt Damon-starring film "The Adjustment Bureau".

"Game of Thrones" will begin production for season 4 in August. The new season itself will only premiere in 2014. The show is expected to take part in the upcoming San Diego Comic-Con.