Richard Dormer
Richard Dormer - Beric Dondarrion
The Actor: The Northern Irish actor, another RADA grad, has long been thought to be one of British acting's best kept secrets, particularly after starring as troubled snooker player Alex Higgins in stage hit "Hurricane," which he also wrote. Dormer's also appeared in films like "Mrs. Henderson Presents" and "Five Minutes Of Heaven" and TV series like "My Boy Jack" and "Hidden," but recently got a lead role -- later in the year, he'll star as Belfast punk legend Terri Hooley in "Good Vibrations" from the producers of "24 Hour Party People."
The Character: Beric Of Dondarrion is a former soldier for Ned Stark, who is now the leader of the outlaw group the Brotherhood Without Banners, and may or may not be unkillable.

Nathalie Emmanuel
Nathalie Emmannuel - Missandei
The Actor: Emmanuel is a veteran of low-rent British teen soap "Hollyoaks," in which she played Sasha Valentine, who became a prostitute and a heroin addict. Since leaving the show in 2010, she's starred as Nala in "The Lion King" on stage and appeared in the most recent season of cult superhero drama "Misfits."
The Character: Daenerys is a little lacking in followers after the events in Qarth, but Missandei, an interpreter in the slave city of Astapor, looks to fill the gap. Eleven in the books, clearly a little older here.

Kerry Ingram
Kerry Ingram - Shireen Baratheon
The Actor: Thirteen-year-old Kerry Ingram has aleady had her fair share of success, sharing the Olivier Award (the British equivalent of the Tonys) for Best Actress in a Musical for playing the title character in smash-hit musical "Matilda" (alternating with three other young actresses).
The Character: Shireen Baratheon is the young daughter of Stannis Baratheon (Stephen Dillane), who nearly died of a disease called 'greyscale' as a child, and is left with flaky, grey dead skin on her left cheek and neck as a result.

Tara Fitzgerald
Tara Fitzgerald - Selyse Baratheon
The Actor: Tara Fitzgerald was a major rising star in Britain after graduating from Drama Centre in 1990: she played Ophelia to Ralph Fiennes' Hamlet in 1995, winning a Drama Desk Award for her trouble, and starred in films like "Sirens," "The Englishmen Who Went Up A Hill But Came Down A Mountain" and "Brassed Off." More recently, she's been a regular on long-running BBC procedural "Waking The Dead," and its spin off, "The Body Farm."
The Character: Selyse Baratheon (née Florent) is Stannis' wife, and the mariage has never been a happy one. And yet Selyse is a fervent supporter of his priestess Melisandre and her new religion.
Paul Kaye
Paul Kaye - Thoros Of Myr

The Actor: The second "Spaced" grad of the new batch (he had a cameo in an early episode), Kaye came to fame playing obnoxious red-carpet interviewer Dennis Pennis on a BBC comedy show. After the character was killed off, he starred in British films like "Blackball" and "It's All Gone Pete Tong," and has become a familiar and flexible character actor, with particularly memorable role on TV show "Pulling," and as Ingram's stage father in "Matilda."
The Character: Thoros is a red priest, affiliated to the same religion as Melisandre. He's also a formidable warrior, and co-founds the Brotherhood Without Banners.

Thomas Brodie-Sangster
Thomas Brodie-Sangster - Jojen Reed
The Actor: The boy-who-would-have-been-Tintin, Sangster came to attention as Liam Neeson's son in "Love Actually" before going on to star in films like "Nanny McPhee," "The Last Legion," "Bright Star" and as Paul McCartney in "Nowhere Boy." TV roles have included a classic two-part "Doctor Who" and the voice of Ferb in long-running Disney Channel animation "Phineas and Ferb." He was originally cast in the title character in Steven Spielberg's "The Adventures of Tintin" before scheduling conflicts saw Jamie Bell step in instead.
The Character: Jojeen Reed is the son of another aristocratic family who has "greensight," the power of prophetic dreams. He accompanies Bran, Osha and Hodor as they flee from Winterfell.