Thoros

Thoros of Myr is a red priest of R'hllor from the Free City of Myr, and a member of the court at King's Landing. There is currently no information if he will be cast. But his good friend Ser Beric Dondarrion have already appeared.

Lord Snow
He is mentioned during the conservation between Jory Cassel and Jaime Lannister. They reminiscences about the Siege of Pyke and mentions that Thoros of Myr charged the breach with his burning sword.