That’s exactly what they are. Yes it’s demonic.
Some paranormal researches believe there is a connection between “bigfoot/yeti” and UFO’s.
Black-eyed children and all the like.
Even this gov’t employee is a believer.
https://www.orlandosentinel.com/space/os-ne-ufo-alien-community-central-florida-20190319-story.html
They’ve got their explanation for a pre-trib Rapture ready to go...
Why would they necessarily be demonic ?
We have life underground. We have life in the deepest parts of the ocean.
We have life in the air. Why would we not have life that can move between the upper atmosphere and the edge of 'space' ?
We have creatures on land and ocean that can make themselves almost invisible. Why couldn't there be creatures high above who can do the same ?