Pypar

Pypar, commonly called Pyp, is a recurring character in Game of Thrones. He is played by guest star Josef Altin and débuts in the third episode of the first season.

According to Pyp, he was arrested for stealing a wheel of cheese to feed his sister, who had not eaten for two days. Later he revealed this was a lie, and he'd been sent to the Wall for refusing to grant sexual favors to a noble lord. He was sentenced to the Night's Watch and now serves at Castle Black.

Season 1
Pypar, along with Grenn and Rast, is beaten bloody by Jon Snow in the training yard at Castle Black. They later threaten Jon in the armoury, but are encouraged to leave by Tyrion Lannister. Tyrion contrasts Pypar's background as a starving peasant to Jon's privileged upbringing in a warm castle with a master-at-arms eager to teach him in the art of combat. This encourages Jon to start training the others in swordplay, earning their respect.

Pypar and Grenn have become firm friends, with Pypar teasing Grenn about his slow wits. When Samwell joins the recruits and is beaten, Pypar holds Jon back as he attempts to interfere. He goes along with Jon Snow's plan to 'go easy' on new recruit Samwell Tarly, to the fury of Ser Alliser Thorne.

Pypar awkwardly tells Jon and Samwell that he was really sent to the Wall after refusing to grant sexual favors to a noble lord. He didn't want to tell strangers the real reason. Samwell asks Pypar, who has a good singing voice, for a song, but Pypar is too embarrassed by his confession and walks off.

Pypar and Grenn are among the men who witness the arrival of the bodies of Othor and Jafer Flowers to Castle Black. Grenn, Pypar and the others pass around Jon’s new sword, Longclaw. Grenn, Pypar and Sam ride after Jon when he chooses to abandon his post at Castle Black. They talk to him, reciting their oaths, and convince him to return.

In the books
In the Song of Ice and Fire novels, Pyp is an actor who wandered the Seven Kingdoms with a troupe of players. He can imitate other people's voices and boasts that he can identify where in Westeros someone has come from just by their accent. He is named to the rangers.