Akhenaten ruled ancient Egypt as pharaoh from about 1367 to 1350 B.C. He was married to Queen Nefertiti. Akhenaten was a religious reformer devoted solely to the worship of Aten, the sun god. During the early part of his reign, he abandoned the state religion of Amun.
He was later taken by aliens known as the Celestial Order to be one of their chosen representatives. Initially unable to grasp his situation, Akhenaten was driven mad. Upon regaining his wits, Akhenaten was taught of the Heart of the Universe, a powerful cosmic artifact that would turn those who possessed it into a living god on par with the most powerful cosmic entities in the Marvel Universe. His mind danced with insanity for nearly 2000 years as he struggled to understand the scope of the astral revelations showed to him by the Order. He spent one century to master the Heart's powers and two thousands years to earn the Order's trust.
After betraying the Order and stealing more power he was previously given access to, Akhenaten returned to Earth seeking to restore his kingdom.
Akhenaten killed the X-Men, the Fantastic Four, and the Avengers. Doctor Doom tried to go back into the past to destroy Akhenaten before he gained his powers, but Amenhotep had expected this and was there to meet Doom, saying Doom was a fool to think Amenhotep would leave his past unprotected.