Waymar Royce

Waymar Royce is a character in Game of Thrones. In the unaired pilot episode he was played by Jamie Campbell Bower, but was replaced with Rob Ostlere for the series proper.

Ser Waymar Royce was the youngest son of House Royce, a noble family of the Vale of Arryn. Waymar was sent to the Wall to join the Night's Watch, where he was placed amongst the rangers due to his noble birth and skill at arms. He commanded a ranging beyond the Wall along with Gared and Will to investigate sightings of wildlings close by. Instead they found a group of White Walkers, and Royce, along with Gared, was brutally killed.

In the books
In the novels, House Royce of Runestone is distantly related to House Stark. Eighteen-year-old Waymar is a skilled warrior, trained by his castle's master-at-arms, but is untested in battle. He is arrogant and has a tendency to underrate the experience of men longer on the Wall due to their lower birth, but is not completely stupid. He is the third and youngest son of 'Bronze' Yohn Royce. After engaging a single White Walker in combat he is defeated and killed. When Will surveys the damage and retrieves Royce's shattered sword Royce revives as a wight, his eyes now icy blue, and murders Will.