Jon Snow is a major character in the first, second, third, fourth, fifth, and sixth seasons. He is played by starring cast member Kit Harington, and debuts in the series premiere. Jon is the bastard son of Lord Eddard Stark of Winterfell. Upon his father leaving for the south, Jon decides to join the Night’s Watch, defending the Wall from the threats beyond.
At the Wall, Jon finds a place of acceptance where the circumstances of his birth are of little importance. He has a pet direwolf named Ghost, and wields the Valyrian steel sword Longclaw, which was a gift from Lord Commander Jeor Mormont, who took Jon as his personal steward and came to see him as a surrogate son.