there has been so many retcons and new origins for humanity I dont know where to start but let's try. >Celestial made earth habitable > created humanity with the ability to be godlike (destiny force) then did sub experiments thus making deviants and mutants.>left
they come back to see and test humanity time and time again.
I think a new retcon happen that explains humanity being from a dying celestial infected with something.so
now humanity was a mistake and a virus but still created by aliens or some shit