“Game of Thrones” Prequel Casts Five More Series Regulars

John Heffernan. Photo by Dan Wooller/REX/Shutterstock (5600518w)

HBO’s prequel to Game of Thrones has added to its cast.

The prequel has tapped five new series regulars to star opposite Naomi Watts; they are: Marquis Rodriquez, John Simm, Richard McCabe, John Heffernan, and Dixie Egerickx.

They join previously announced Josh Whitehouse, Naomi Ackie, Denise Gough, Jamie Campbell Bower, Sheila Atim, Ivanno Jeremiah, Georgie Henley, Alex Sharp, Toby Regbo, and Miranda Richardson.

The drama pilot hails from GoT co-executive producer George R.R. Martin and writer Jane Goldman. Goldman will also serve as showrunner and the two will also exec produce.

“Taking place thousands of years before the events of Game of Thrones, the series chronicles the world’s descent from the golden Age of Heroes into its darkest hour,” the logline reads. “And only one thing is for sure: from the horrifying secrets of Westeros’ history to the true origin of the white walkers, the mysteries of the East to the Starks of legend… it’s not the story we think we know.”

Back in November, Martin told Entertainment Tonight, “Westeros is a very different place. There’s no King’s Landing. There’s no Iron Throne. There are no Targaryens — Valyria has hardly begun to rise yet with its dragons and the great empire that it built. We’re dealing with a different and older world and hopefully that will be part of the fun of the series.”

Production is set to start this summer.