Fourth king of the 4th dynasty (ca. 2575-ca. 2465 BCE) of ancient Egypt and builder of the second of the three Pyramids of Giza; also often credited with building the Great Sphinx. Was the son of King Khufu and succeeded the short-lived Redjedef, probably his elder brother. He married his sister Khamerernebti, Meresankh III, and perhaps two other queens..