The Grey King is a character from the popular children's book series, The Dark is Rising by Susan Cooper. He is depicted as a powerful and mysterious figure who embodies the forces of darkness. The Grey King plays a crucial role in the story, representing the struggle between good and evil. In the narrative, the Grey King is associated with the winter season and is known for his ability to manipulate the elements. His character serves as a significant antagonist, challenging the protagonist, Will Stanton, as he seeks to protect the Light against the rising darkness.