As far as the comics are concerned, there isn’t a ton of inter-connectivity between the Eternals and the X-Men. However, similarities between the origin stories of the two groups of superhumans have Marvel scholars drawing connections to see where there might be some overlap.
At ScreenRant, Nicholas Raymond explains an intriguing theory: given the similar creation stories for the Eternals and mutants, it might be possible that the X-Men were also created by the Celestials in an early failed attempt to create the Eternals. Mutants gain their power from a special gene, the X-Gene, which developed in the earliest stages of humanity. The fact that the Eternals and the Deviants were the result of the Celestials’ experiments on early humans leaves the door open for the possibility that the mutant X-Gene was also a result of interspecies dabbling.
There are still tons of unanswered questions that will need to be worked out before Marvel can officially bring the X-Men home, but tying them to the creators of the superhumans at the center of their next big MCU franchise would certainly be a start.
Written by: Looper