Who played Tyrion Lannister in 'Game of Thrones'?

Which family's motto is "Winter is coming" in 'Game of Thrones'? Which family's motto is "Hear me roar!" in 'Game of Thrones'? Who played Daenerys Targaryen in 'Game of Thrones'? Who played Jon Snow in 'Game of Thrones'? What is the name of the giant wall in the north in 'Game of Thrones'? Which 'Game of Thrones' prequel series focuses on House Targaryen? In 'Stranger Things', in which fictional Indiana town does the story take place? In 'Stranger Things', what is the name of the alternate dimension?