Morpheus is a figure from ancient Greek mythology, known as the god of dreams. He is often depicted as a winged figure who can take any human form to appear in dreams, allowing him to communicate messages or prophecies. His name is derived from the Greek word "morphe," meaning "form" or "shape," reflecting his ability to change appearance. In literature, Morpheus is frequently referenced in various works, symbolizing the realm of dreams and the subconscious. He is sometimes associated with the Oneiroi, the personifications of dreams, and is considered one of the most significant figures in the dream world.