The Night King is a fictional character from the television series Game of Thrones, based on the A Song of Ice and Fire novels by George R.R. Martin. He is the leader of the White Walkers, a race of ice creatures that threaten the realm of Westeros. The Night King possesses the ability to raise the dead, turning them into wights to serve him. In the series, the Night King is portrayed as a formidable antagonist, representing the ultimate threat to humanity. His character is known for his icy blue eyes and a chilling presence, symbolizing death and destruction. The Night King's backstory and motivations are explored throughout the series, culminating in a significant confrontation with the living.