I always enjoy your open exploration thinking and writing as you go. We don’t know what we are going to write until it is written.
One of the hitchhiker stories tells of an upright wolf man type creature that tore bark off a tree, scared the shit out of a couple of families, seemed to jump from Skinwalker visitors to nearby friends, just playing around. They generally don’t hurt people and seem to get energy stomach just scaring folks.
They seem to be capable of manifesting physically but are not confined to physicality.
They seem to me to be more extra diminutional than necessarily associated with UFOs, although you never know what to expect from UFO encounters.
They don’t seem to hang around indefinitely. It’s as if the have a job to do, do it, and biz off to haunt somebody else. But, this too varies. They will not be predictable and seem very interested in humbling our anthropomorphic hubris. Perhaps that is their principal job.