First Appearance: Strange Tales #136 (September 1965).
Appearances: Strange Tales #136, Dr. Strange v2 #7, 9-12, 57, Doctor Strange/Doctor Doom Graphic Novel.
Years Active: 3,000 B.C.E.-present.
Aged Genghis is a sorcerer, currently extremely old and seemingly senile, but still respected by Doctor Strange. In 3,000 B.C.E. Genghis, a Chinese sorcerer, contacted the mystical beings the Vishanti and asked them to grant him great mystical knowledge and power in exchange for his bringing together Earth's most powerful magicians once a century to compete to see who would be Earth's Sorcerer Supreme. Genghis used his new power to greatly slow his aging, and has been active, though a recluse, ever since.
It's never been made clear, though, at what point Genghis went from venerable to senile--perhaps before the time he was responsible for Dr. Doom meeting the monks who made his armor?