Pypar

Pypar, commonly called Pyp, is a character in Game of Thrones. He is played by Josef Altin and debuts in the first season.

Pyp is a mummer (actor and singer) who wandered the Seven Kingdoms with a troupe of players. He was recruited to the Night's Watch and now serves at Castle Black.

In the books
Pyp is an actor who can imitate other people's voices and boasts that he can identify where in Westeros someone has come from just by their accent.