Cheops

Cheops was the person whose face Erimem's tutor told her was the face on the Great Sphinx, but the Fifth Doctor firmly disputed this. (AUDIO: The Eye of the Scorpion)

Behind the scenes
Although he may well have been a pharaoh in real life, no piece of DWU fiction tells us this. Since Peri is at pains at the end of Scorpion to put the face of a king on the Sphinx, it can be inferred that he probably was a pharaoh, but it's still a bit ambiguous.