At the time corresponding to 3000 A.D. on our own Earth, the man who became known as Rama-Tut was a young man, and being a man of adventure in a time of world peace and prosperity, he was discontented. He visited a citadel that Nathaniel Richards had erected, and within a long-sealed chamber in the citadel, he discovered part of a time machine and the plans for its operation. He planned to loot various time periods for weaponry and technology while making his base in ancient Egypt, which he would use his advanced science to rule. To play upon the ancient Egyptians’ religious beliefs, he created a sphinx-like idol to house the time machine.

Finally he traveled in the time machine (which carried its giant sphinx-like housing with it) to Egypt of 2950 B.C. (the Second Dynasty). A miscalculation caused the time machine to crash, leaving the passenger stranded in that time period, until he could repair the machine. He subjugated the native Egyptians with his superior weaponry. He became the ruler of Egypt under the name of Pharaoh Rama-Tut.

Rama-Tut had ruled Egypt for about ten years when the superhuman adventurers of the Fantastic Four arrived in a time machine invented by Doctor Doom. The Fantastic Four were captured and were brought before the Pharaoh, who knew of the Fantastic Four from records in his native time period. Rama-Tut used his advanced science to sap the wills of the Fantastic Four. He intended to wed one of their members, the beautiful Invisible Girl, and he put her three teammates, Mister Fantastic, the Thing, and the Human Torch, to work as his slaves. But thanks to Stephen Strange and the West Coast Avengers, who were also present in Egypt at this time, the Thing was freed from the will deadening effects of Rama-Tut’s weapon. He freed his three teammates, and the Fantastic Four fought against Rama-Tut and his forces. Rama-Tut escaped to his now-operative time machine and left Egypt, destroying all evidence of his remaining technology.

On his way through time, Rama-Tut’s time machine encountered chronal interference (a “time storm”), which forced him to leave the time stream and enter the Twentieth Century. There he found Doctor Doom adrift near the orbit of Jupiter following a battle with the Fantastic Four after their own return to the Twentieth Century. Hoping to induce the disoriented Doom to accept him as an ally, Rama-Tut led Doom to believe that he, Doom, was the ancestor who had invented his time machine. Rama-Tut sent Doom back to Earth in a pre-programmed landing module.

At this point, a divergence occurred, creating two alternate realities, each with its own Rama-Tut. In one reality, Rama-Tut decided after encountering Doom to travel a short time into the past, where he established a new identity as the Scarlet Centurion, and manipulated the founding members of the Avengers into conquering Twentieth-Century Earth for him. This conquered Earth is not the Earth of “mainstream” history but one that diverged from it. A group of Avengers from the mainstream time line journeyed to this divergent one and thwarted the Scarlet Centurion, freeing that Earth of his rule. A divergent counterpart of the Centurion then fled to yet another alternate time line, where he became a nemesis of the Squadron Supreme.

In the other reality that diverged after Rama-Tut’s meeting with Doom, Rama-Tut continued his journey into the future, but, due to turbulence in the time stream, lost control of his time craft. On regaining control, he found himself on the war-torn Earth of 4000 A.D. in an alternate future. There, Rama-Tut renamed himself Kang the Conqueror. He created an empire for himself in that time period and frequently attacked the Twentieth Century.

At sixty years of chronological age, Kang returned to ancient Egypt to a point sometime after he had originally departed from it as RamaTut. Reassuming the role of RamaTut, he ruled Egypt benevolently for ten years.

Rama-Tut no longer had a working time machine with which he could travel into the future. Knowing that Rama-Tut had helped thwart Kang, his other self, in the latter’s attempt to capture the Celestial Madonna, Rama-Tut had himself placed in suspended animation until the Twentieth Century when he did indeed aid the Avengers in thwarting Kang’s designs on the Celestial Madonna.

In the course of his struggles with Kang, Rama-Tut encountered the time master Immortus and realized that lmmortus was his future self. Journeying to the extra-temporal realm of Limbo, he became lmmortus.