The HBO series, Game of Thrones, will be returning to HBO on April 6. The epic fantasy that takes place in Westeros and features mighty dragons and warring kingdoms, will feature actors Charles Dance and Diana Rigg.

Rigg told Associated Press about her new role on the HBO series, "I loved the idea of playing this naughty old bag. It's my idea of heaven."

Rigg is a British actress best known for her roles on stage and screen. She won Outstanding Supporting Actress in a Miniseries or a Special for Rebecca. She will play Lady Oleanna on Game of Thrones. She also won a BAFTA Award for The Avengers.

Dance plays Lord Tywin Lannister in the series. He was known for his role in Gosford Park, and won a BAFTA TV Award for Best Actor for The Jewel in the Crown. Dance was glad to participate in Game of Thrones where the “writing was good, the costumes are great and, eventually, the location catering was fantastic." Other members of the cast include Peter Dinklage, Lena Headey, Jack Gleeson, Nikolaj Coster-Waldau, and Emilia Clarke. Dance previously worked with Diana Rigg, who will be joining the cast this season.

As the show as moves forward with Rigg and Dance, writers David Benioff and Dan Weiss will be certain to providemany plot twists and royal feuds for two more seasons.

Game of Thrones will air on HBO at 9PM.