Nikolai was specifically created by THE CLAW to host outer gods, unlike regular humans who are not really made for that.
Viewing post in [BTNverse] Saccharine playground comments
Ohh, interesting! Do people possessed by outer gods remain aware of what's happening, essentially suffering from locked in syndrome until we leave? I guess that explains how Ran came up with a plan for the S1 finale, although I guess a lot of it was preplanning before we turned up!
Either way, I'm rather happy with the worldbuilding you've done with the btnverse!