First Host
One of four tests of a given race that has been altered by the enigmatic Celestials. During the First Host, the Celestials select the dominant race of a given planet and alter their genetic structure for reasons that have not yet been revealed. The Celestials use their advanced technology to alter the race into three distinct races: The mainline race that shows normal attributes until evolution and an outside catalyst creates mutation, granting individuals of the mainline race a wide array of varying abilities; a superior race dubbed Eternals who are typically empowered with cosmic energy; and a genetically unstable race dubbed Deviants. The Celestials have practiced these tests on various races such as Humans, Kree, and Skrulls.
On Earth-30826, it was the First Contact, performed by the Eternals (servants of the Celestials) by abducting Homo erectus to create Deviants.[1]
(See Also: Second Host, Third Host, Fourth Host)