The Progenitor was a Celestial who was infected by the Horde and died on the newly formed planet Earth. This event is said to be the origin of life on Earth and the reason for why so many of Earth's inhabitants have superpowers. In the modern era, the Progenitor's corpse became Avengers Mountain after it was raised from beneath the Arctic Ocean by the other Celestials as a gift to the Avengers. It was later used to manufacture a new Celestial to end a conflict between the Eternals and mutants. H
Celestial Technology (Concept) - Comic Vine
Celestials, Marvel Database
Why is the power of the Celestials (Marvel) so poorly understood
Progenitor (Celestial) (Multiverse), Marvel Database
In Marvel Comics, who are the Celestials, and how powerful are
Earth-616, Marvel Database
Aspirant (Aspirant) - Superhero Database
Progenitor (Celestial) (Multiverse), Marvel Database
Progenitor (Celestial) (Multiverse), Marvel Database
The Progenitor (Celestial) (The Progenitor) - Superhero Database
Progenitor (Celestial) (Multiverse)/Gallery, Marvel Database
Celestials: Comprehensive Character Summary - Fanboy 4 Life
Loki (Marvel Comics) - Wikipedia
Progenitor (Celestial) (Multiverse), Marvel Database