VXID

because what if everyone gets a moment of flinging occtis over their shoulder and carrying him to safety à la julien in the crypts

including and especially thimble

I think we have that "answer Brennan provided" that Luis mentioned a while back when the cast was asked if Occtis could wear Bolaire.

If I remember correctly, Sam's hint that they'd filmed Convergence was given in either the same Con pannel, or one attended fairly close to it. So if Luis thinks they had the answer and Convergence was filmed already, then I think the answer is this:

Bolaire can wear someone without a soul, because Rulius said he didn't have his own soul on him while Bolaire was wearing him.

In fact, it seems to me the deciding factor of who/what can wear Bolaire is if they can Attune to a magical item. Taliesin mentioned humanoid in shape and size when Tyranny was allowed to successfully wear him, but that's also kind of commonly the types of figures that do Attune to magical items. And could be about Bolaire's ability to utilize the body. Completely different bodily layout could be beyond his ability to control.

I hope this satiated that Occtis x Julien to Closer craving