Stiv

Stiv is a minor character in Game of Thrones. He is played by guest star Stephen Don and only appears in the sixth episode of the first season.

Stiv is a former member of the Night's Watch who has abandoned the Wall to live amongst the wildlings.

Season 1
Stiv, Osha and Wallen flee south of the Wall, apparently in fear of the return of the White Walkers. In the woods near Winterfell they stumble across Bran Stark and decide to steal his horse. Realising his importance, they ponder taking him prisoner and returning him to Mance Rayder, the king-beyond-the-wall, for a reward, but decide against it. Robb Stark intervenes and kills Wallen and disables Osha, but Stiv holds a knife to Bran's throat. However, Theon Greyjoy shoots him through the back with arrows, killing him. Osha surrenders to Stark custody.

In the books
In the Song of Ice and Fire novels Stiv is a member of a band of wildlings who manage to evade the Watch to seek succor in the lands to the south. He is an associate of Osha and Wallen.