Rast

Rast is a minor character in Game of Thrones. He is played by Luke McEwan and debuts in the second episode.

Rast is a member of the Night's Watch. He was arrest for rape and chose to take the black over castration.

The Kingsroad
Rast and several other new recruits join Benjen Stark and Tyrion Lannister's party as it travels to the Wall.

Lord Snow
Jon Snow beats Rast and two other recruits, Grenn and Pypar, in the training yard at Castle Black. Rast joins Grenn and Pypar in threatening Jon in the armoury, but is encouraged to leave by Tyrion. Jon later begins training the Night's Watch recruits in the art of combat, earning Pypar and Grenn's respect, but not Rast's.

Cripples, Bastards and Broken Things
Rast is happy to fulfil Ser Alliser Thorne's commands to humiliate Samwell Tarly on his arrival at Castle Black. Jon convinces Pypar and Grenn to go easy on Samwell, but Rast refuses to go along until Jon has his direwolf Ghost threaten him. Afterwards, he refuses to beat Samwell, despite Ser Alliser's commands.

In the books
In the Song of Ice and Fire novels, Rast was sent to the Wall after being accused of rape. He chose to take the black rather than face execution. Whilst being trained as a ranger, he becomes an acquaintence of Jon Snow and Samwell Tarly.