He is the future self of Pharaoh Rama-Tut, Scarlet Centurion, Kang the Conqueror, and Iron Lad / Kid Immortus, and a descendant of the scientist of the same name.

[1] In The Celestial Madonna Saga, Immortus was retroactively established to be the future self of the time-travelling Pharaoh Rama-Tut and Kang the Conqueror, having turned towards a more peaceful outlook on existence.

He was approached by the alien Time-Keepers—time travelers from the end of the universe, the last living creatures in existence—to become their agent, preserving timelines rather than conquering them in exchange for immortality.

Immortus faked his death several times before ultimately turning on the Time-Keepers to assist the Avengers and, as punishment, was truly killed.

[22] When the rash actions of Kang caused the timestream to become critically unbalanced, Immortus allied himself with the Next Avengers and future versions of Iron Man and the Hulk in an attempt to undo the damage.

Disguising himself as a younger version of Kang, Immortus traveled back to the 21st century and convinced the Avengers to come to the future so that they could understand what had happened.

The Church of Immortus's goals are to destroy Reed Richards' Human Torches, allowing mankind to keep their mutations.

Immortus is advised in his role by a mysterious man known as Mr. Church, who is Mephisto attempting to lead mankind into its own demise.

In his final appearance in the series, he has come to grips with his being Kang, and vows to help Reed Richards undo the damage his Church of Immortus has caused.

[volume & issue needed] Immortus makes a cameo appearance in the X-Men: The Animated Series episode "Beyond Good and Evil Pt.

Characters inspired by Immortus appear in media set in the Marvel Cinematic Universe (MCU), portrayed by Jonathan Majors.