HBO
Watchers on the Wall shared the two casting descriptions for the characters reportedly being cast in the UK right now.
For now, the characters go by the generic names Northern Girl, and Boy.
Both roles are for children.
The casting description for Northern Girl indicates that the character should be between 8 and 10 years of age, and she's described as, "a straight-talking Northern-accented girl, someone remarkable for her dauntlessness and integrity." Northern Girl is also supposedly brought up by soldiers, that all share a sense of "fearlessness."
The casting description for Boy indicates that he should be between 8 and 12 years of age, with a "physically fit and agile look, someone with a good, distinctive face." Boy is also described as coming from a "poor background," and "has to fight to make his way in the world."
Northern Girl's scenes will supposedly be shooting mid November, while Boy's scenes will be shooting from the end of November until the end of December.