The past history of Sif mirrors that of her Earth-616 counterpart, with one minor difference in her origins. On Earth-9997, all the Asgardians were a previously unknown race of aliens that were manipulated by the Celestials centuries ago. As part of the third tier of mutation in the Celestials' plans, once a species reached a certain evolutionary point their appearance, super-human abilities and character were defined by those around them. When these aliens arrived on Earth centuries ago, they were convinced by a man named Donnerson (who was manipulated by Mephisto and would later become Odin) that they were the Asgardians of myth. One such alien would become Sif.[1]

When Odin's lies were revealed, Sif would briefly return to her previously undefined form with the rest of those of Asgard, but would return to her original role after Odin's plea for them to return. Her fate following this, remains to be recorded.[2]


Sif is a member of an unknown alien race which has been manipulated by the Celestials. The natural evolution of any species created by the Celestials are three fold and happen over centuries of evolution: The first is an original mutation, based on some subconscious level by the individual, the second is that all members of that race have the same power, the third is a power that the beings lose all self definition and their appearance and abilities are at the whim of others belief in them.

Sif's evolution was such that it was at the third tier of mutation, as such her abilities and powers likely mirrored that of her Earth-616 counterpart, because that is what Odin believed her abilities should be. Further, this was reinforced by the belief of her fellow Asgardians and the population of Earth.

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