Chilean actor Pedro Pascal has been cast in a key role for the upcoming season of fantasy epic Game Of Thrones.

The Graceland star will portray Prince Oberyn Martell, a character author George R. R. Martin also refers to as The Red Viper in the books the hit Tv show is based on, reports

Pascal will make his series debut in the fourth season of the drama, which is due to air on America's HBO cable network in 2014.

He joins cast regulars including Lena Headey, Peter Dinklage, Charles Dance and Emilia Clarke.