Appearance: Nova #6 (February 1977).
Appearances: Several others.
Years Active: 2200 B.C.E. to the present.
The Sphinx was originally Anath-Na Mut, the chief wizard in the court of Pharaoh Ramses II. Anath-Na Mut was banished from Ramses II's court following his loss in a magical duel to Moses. Anath-Na Mut discovered the superpowerful Ka Stone, which gave Anath-Na Mut great powers and immortality. Anath-Na Mut dubbed himself the "Sphinx" and wandered the Earth for the next several millennia before being killed in the modern era following a brief career as a villain.
The Sphinx merits inclusion here because, in his own words, he had "played both hero and villain" during his many centuries of existence. Just when he might have done this is unclear, though.
In Thunderbolts #46 it was revealed that the Blue Diamond's diamond was actually a sliver of a Lifestone, a power gem created to form an evolutionarily advanced group of the Guardians of the Galaxy; other figures who had slivers of the Lifestone included Man-Wolf, Moonstone, the Basilisk, Ulysses Bloodstone, Dr. Spectrum, and the Sphinx.