White Walkers

White Walkers are fictional, supernatural beings from the "Game of Thrones" series. They are tall, humanoid creatures with icy blue eyes and magical powers, able to reanimate the dead as their army of undead hostages called wights. Originating from beyond the northern Wall in the far north of Westeros, they pose a significant threat to humanity due to their ability to freeze and kill living beings. Their presence symbolizes an existential danger, requiring allied efforts to prevent their advance and preserve the realm's safety.