This unnamed man was a soldier in service to House Karstark.
He is one of Rickard Karstark's men.
He acts as a lookout when Rickard and his men murdered Martyn and Willem Lannister. When Robb Stark orders that Karstark's accomplices be hanged, he protests that he was only the lookout. Robb, on the basis that the man knew perfectly well what Rickard intended to do and did nothing to stop it, then orders him to be executed last so that he may watch the others die.
|Season Three appearances|
|Valar Dohaeris||Dark Wings, Dark Words||Walk of Punishment||And Now His Watch Is Ended||Kissed by Fire|
|The Climb||The Bear and the Maiden Fair||Second Sons||The Rains of Castamere||Mhysa|
In the books
In the A Song of Ice and Fire books, Karstark and his men murdered Willem Lannister and his cousin Tion Frey. Karstark's lookout is similarly executed last to watch his companions die before him.