It was explained in Eternals annual that the celestials were uni-minds of an entire planet encased in armor, so maybe they just took a piece of that mind and made an eternal. If the celestials are uni-minds encased in armor, this is from a comic not the movie mind you, then the eternals are just a minimind encased in an intricate anthropomorphic case.
I hadn't thought of it that way, but it actually would kind of make sense. Granted, it would make the Celestials effectively a more cosmic and comic booky version of the ( Mass Effect ) Reapers. . . but you know, they kind of are anyway.
Which segues into two "cosmic affairs" questions the movies leaves me pondering:
1. Why did Tiamat help the Eternals kill her?
By which I mean, *did* Tiamat have any choice or involvement, or was it purely an unintended side effect of how the Emergence process normally works, vis a vis networking with the local Eternals? Obviously, the simplest answer would be "it was unintentional and undesired," especially since its not at all clear Tiamat had any agency or awareness before being "born". However, a newborn god is still a god, and probably shouldn't be assumed to follow the limits of helplessness of a newborn living being. . . and Tiamat clearly had enough of a mind that Unimind-Druig *was* succeeding in putting her back to sleep with his telepathic powers. You would think those would be completely useless if the Celestial had no volition or power pre-Emergence; a baby can't chose to not be born.
So, if you conclude that Tiamat did in fact have volition and power. . . was it just an incredibly unfortunate oversight that the one thing she had zero ability to control was her connection to the Eternals? Or did the choices and decisions of the various Eternals effectively convince Tiamat "Okay, your probably right, lets not blow up Earth. Well this is going to hurt"? If Tiamat had some say in this, that might certainly help explain Arishem's relative leniency. . .
( This also kind of suggests some other questions, like "How dead *is* Tiamat?" or "What are the effects and consequences of having the body of a god present on Earth?" Like, is the site of the Emergence now just a really weird looking bit of otherwise perfectly mundane geography? Or are there exotic substances and energies present? )
2. What is the deal with Ego?
I wouldn't say anything in Eternals actually puts the lie to Ego's claim to be a Celestial. However, he definitely doesn't seem to be a normal Celestial. Is Ego the result of an Emergence gone horribly wrong, leaving a Celestial who is crippled without their normal body? Is Ego a "feral" Celestial, possessing the nature of that species but none of the "upbringing"? Either way, why did no other Celestial ever contact him? Or for that matter, kill him, if his nature or ideology were anathema?
