In Greek mythology, the figure associated with bringing dreams and visions through sleep is Hypnos. As the personification of sleep, Hypnos has the power to induce slumber and convey dreams, often depicted with wings and a gentle demeanor. His influence illustrates the ancient Greeks' understanding of the importance of sleep and dreams in human experience. Hypnos serves as a bridge between the realms of the conscious and the unconscious, symbolizing the mysteries of rest and the revelations that can come during dreaming.