Did you ever spot a hidebehind? Dad told me about them when I was a kid. They only appear in the corner of your eye, and as soon as you turn to look at them they hide behind something, so you never ever get a good look at them.
You should add them to your pantheon, because they fit right in.
I know people who see those i listed.
A hidebehind sounds like a generic name, and i do not really like it, because they don't hide behind anything. You just don't see them when you look right at them. But it does give an explanation to the glimpses into other realities that happen to people.
Do you know any schizos that hallucinate and rave madness?
Yep, i know those too.