Winston Niles Rumfoord is a fictional character from Kurt Vonnegut's novel, Slaughterhouse-Five. He is a wealthy and eccentric businessman who becomes a central figure in the story after he is transformed into a being that exists in multiple dimensions. This transformation occurs due to a freak accident involving a spaceship and a black hole. Rumfoord's unique existence allows him to perceive time differently, seeing all moments simultaneously. He often shares his insights with the protagonist, Billy Pilgrim, highlighting themes of fate and free will. His character serves as a commentary on the nature of existence and the human experience.