Jon Snow is a fictional character from the popular television series and book series, Game of Thrones, created by George R.R. Martin. He is introduced as the illegitimate son of Eddard Stark, the Lord of Winterfell. Jon is known for his strong sense of honor and loyalty, often struggling with his identity and place in the world. Throughout the series, Jon joins the Night's Watch, a sworn brotherhood tasked with guarding the Wall, a massive ice structure separating the Seven Kingdoms from the dangers beyond. His character evolves as he faces various challenges, including battles against the White Walkers and political intrigue within the realm.