"Game of Thrones" has reportedly cast a small but pivotal Season 3 role -- Roslin Frey -- according to fansite Winter Is Coming. British actress Alexandra Dowling is rumored to have scored the role, after WIC discovered the credit on Dowling's resume. A request for confirmation from HBO was not immediately returned.

While fans of the books already know why Roslin's casting is so important to the story, we'll try to keep it spoiler-free for those who haven't read the novels. Suffice it to say, Robb Stark (Richard Madden) was betrothed to an unspecified daughter of House Frey in Season 2 of the HBO drama, but broke that agreement to wed the healer Talisa (Oona Chaplin) at the end of last year, much to his mother's chagrin. The sprawling Frey family, headed by Lord Walder Frey (David Bradley) should play an integral role in Season 3, if the series adheres to the storyline of George R. R. Martin's third book, "A Storm of Swords."

Winter Is Coming also reports that Lord Frey's great-grandson, Black Walder, will be played by Tim Plester, but that is also yet to be confirmed.

In other casting news ...

New Kid hits "90210's" block. Joey McIntyre will guest star on the CW soap as an up-and-coming music manager who has some business with Dixon. [EW]

Matthew Lillard joins FX pilot. The "Descendants" and "Scooby Doo" star will play Daniel Frye, a cocky (and hard-partying) reporter with the El Paso Times. If the pilot is picked up to series, Lillard will reportedly recur heavily. [The Hollywood Reporter]

"Dark Knight" actor boards "Last Resort." Singapore actor Chin Han has joined the ABC drama as as a Chinese ambassador, Mr. Zheng, who works with Andre Braugher's character to negotiate supplies for the starving submarine crew and islanders. [AsiaOne]

Loading Slideshow...
  • Daenerys Targaryen

  • Sansa Starks And Tyrion Lannister

  • Jaime Lannister and Cersei Lannister

  • Jon Snow

  • Arya Stark

  • Joffrey Baratheon

  • Margaery Tyrell

  • Daario Naharis

  • Ygritte And Tormund

  • Daenerys Targaryen

    Emilia Clarke as Daenerys Targaryen.

  • Tyrion Lannister

    Peter Dinklage as Lannister

  • Rodrik Cassel

    Ron Donachie as Rodrik Cassel.

  • Jaime Lannister

    Nikolaj Coster Waldau as Jaime Lannister.

  • 'Game of Thrones' Character Posters

    Maisie Williams as Arya Stark.

  • Melisandre

    Carice van Houten as Melisandre.

  • Commander Mormont

    James Cosmo as Commander Mormont.

  • Varys

    Conleth Hill as Varys.

  • Jaqen H'Ghar

    Tom Wlaschiha as Jaqen H'Ghar.

  • Gendry

    Joe Dempsie as Gendry.

  • Arya Stark

    Maisie Williams as Arya Stark.

  • Cersei Lannister

    Lena Headey as Cersei Lannister.

  • Samwell Tarly

    John Bradley as Samwell Tarly.

  • Myrcella Baratheon

    Aimee Richardson as Myrcella Baratheon.

  • Davos Seaworth

    Liam Cunningham as Davos Seaworth.

  • Grand Maester Pycelle

    Julian Glover as Grand Maester Pycelle.

  • Shae

    Sibel Kekilli as Shae.

  • Xaro Xhoan Daxos

    Nonso Anozie as Xaro Xhoan Daxos.

  • Bronn

    Jerome Flynn as Bronn.

  • Margaery Tyrell

    Natalie Dormer as Margaery Tyrell.

  • Tyrion Lannister

    Emmy winner Peter Dinklage.

  • Theon Greyjoy

    Alfie Allen as Theon Greyjoy.

  • Robb Stark

    Richard Madden as Robb Stark.

  • Tywin Lannister

  • Sansa Stark

    Sophie Turner as Sansa Stark.

  • Jon Snow

    Kit Harington as Jon Snow.

  • Mellisandre and Stannis Baratheon

    Carice van Houten and Stephen Dillane as Mellisandre and Stannis Baratheon.

  • Oberyn Martell

  • Davos Seaworth

    Liam Cunningham as Davos Seaworth.

  • Joffrey Baratheon

    Jack Gleeson as Joffrey Baratheon.

  • Daenerys Targaryen

    Emilia Clarke as Daenerys Targaryen.

  • Danereys Targaryen

    Emilia Clarke as Danereys Targaryen.

  • Catelyn Stark

    Michelle Fairley as Catelyn Stark.

  • Cersei Lannister

    Lena Headey as Cersei Lannister.

  • Brienne

    Gwendoline Christie as Brienne.

  • Balon Greyjoy

    Patrick Malahide as Balon Greyjoy.

  • Bran Stark and Hodor

    Issac Hempstead-Wright and Kristian Nairn as Bran Stark and Hodor.

  • Tyrion Lannister

  • Renly Baratheon

    Gethin Anthony as Renly Baratheon.

  • Arya Stark

    Maisie Williams as Arya Stark.

  • Daenerys Targaryen

  • Samwell Tarly