Diana Rigg Confirmed For HBO's GAME OF THRONES Season 3

HBO has confirmed some of the new cast members for the third season of the hit series GAME OF THRONES, with many of the actors appearing in a video that was unveiled Friday, July 13 at Comic-Con 2012. Among the new actors is Diana Rigg who will portray Lady Olenna Tyrell. Also known as "The Queen of Thorns," Lady Olenna is the grandmother of Margaery and Loras Tyrell and is, in many ways, the true leader of their powerful family.

Rigg won the 1994 Tony Award® for Best Actress in a Play for Medea. Other awards and nominations include the 1994 Drama Desk Award Outstanding Actress in a Play, Medea [nominee], 1975 Tony Award® Best Actress in a Play, The Misanthrope [nominee], 1975 Drama Desk Award Outstanding Actress in a Play, The Misanthrope [nominee] and the 1971 Tony Award® Best Actress in a Play, Abelard and Heloise [nominee].

Rigg’s film credits include On Her Majesty’s Secret Service, 1971′s The Hospital, the Hercule Poirot mystery Evil Under the Sun and The Painted Veil. On TV, she has received two Emmy nominations for her role as Emma Peel and won an award for the 1997 TV-movie Rebecca. She played the title role in 1981′s Hedda Gabler, starred in Bleak House and The Mrs. Bradley Mysteries and, was most recently featured in the BBC miniseries The Last King. She is also a Tony Award winner, among other stage accolades.

Other new actors and the characters they will portray are:

Mackenzie Crook as Orell. A wildling raider, Orell is a "warg" or "skinchanger," with the ability to enter the mind of an animal and control its actions.

Clive Russell as Bryndon "The Blackfish" Tully. Known far and wide as "The Blackfish," Brynden is a famous knight and the uncle of Catelyn Stark. He quarreled bitterly with his brother, Lord Hoster Tully, and the two were estranged for many years.

Nathalie Emannuel as Missandei. Originally from the peaceful island of Naath, Missandei was sold into slavery as a child, along with her brother. She received education in various languages and became a translator to the slave trader Kraznys in Astapor.

Kerry Ingram as Shireen Baratheon, the only child of Stannis Baratheon. An avid reader, she escapes her lonely life through myths and stories - her books are her most treasured possessions.

Paul Kaye as Thoros of Myr. A key member of the outlaw band known as the Brotherhood Without Banners, he is a Red Priest, in service of the Lord of Light, and originally hails from the Free City of Myr, in Essos.

Thomas Brodie-Sangster as Jojen Reed, a mysterious and enigmatic young man who becomes an important ally to Bran Stark.

Ellie Kendrick as Meera Reed. The eldest daughter of Howland Reed and a staunch Stark loyalist, Meera and her younger brother Jojen seek out Bran Stark to protect him on his hard journey north.

Richard Dormer as Beric Dondarrion. Once the lord of Blackhaven and a celebrated warrior, Lord Beric has now become the leader of the Brotherhood Without Banners, a band of vigilante outlaws.

Kristofer Hivju as Tormund Giantsbane. A famed wildling warrior and chief lieutenant of the "King Beyond the Wall," Mance Rayder, Tormund is fearsome and strong, with a large build and a beard to match.

Philip McGinley as Anguy, an extremely skilled archer and key member of the outlawband known as the Brotherhood Without Banners.

TAra Fitzgerald as Selyse Baratheon. The wife of Stannis Baratheon, Selyse spends much of her life in seclusion, shut away in a gloomy tower.

Tobias Menzies as Edmure Tully. The younger brother of Catelyn Stark, Edmure has recently become Lord of Riverrun in the wake of his father's death.

Anton Lesser as Qyburn, a former maester of the Citadel, who was stripped of his chain many years ago.

Links to view the GAME OF THRONES Comic-Con video can be found at: http://www.hbo.com/game-of-thrones; https://www.youtube.com/user/GameofThrones; and https://www.facebook.com/GameOfThrones.

Based on the bestselling fantasy book series by George R.R. Martin, GAME OF THRONES is an epic drama set in the world of Westeros, where ambitious men and women of both honor and ill-repute live in a land whose summers and winters can last years. The Emmy(R)- and Golden Globe-winning fantasy series concluded its ten-episode second season in June, with the third season scheduled to launch in 2013.

Season two cast members included: Emmy(R) and Golden Globe winner Peter Dinklage, Michelle Fairley, Lena Headey, Emilia Clarke, Nikolaj Coster-Waldau, Aidan Gillen,Iain Glen, Kit Harington, Richard Madden, Maisie Williams, Isaac Hempstead Wright, Sophie Turner, Jack Gleeson and Alfie Allen.

Season three credits: The executive producers of GAME OF THRONES are David Benioff, D.B. Weiss, Carolyn Strauss, Frank Doelger, Bernadette Caulfield; co-executive producers, George R.R. Martin, Vanessa Taylor, Alan Taylor, Guymon Casady, Vince Gerardis; produced by Christopher Newman and Greg Spence.