Heidi Hollis has been investigating the mysterious Hat_Man figure & the Shadow_People phenomenon for several years.
http://www.coasttocoastam.com/show/2015/07/31
Why does something appear in a general humanoid shape? Although sometimes they are more like shadowy forms of various things. Then there are the M.I.B. entities that hardly seem friendly. Indeed, they seem to have their own agenda & might not be limited to this world & dimensional plane of existence.
http://desertshapes.blogspot.ca/2014/12/derrel-sims-et-encounters-and-implants.html
https://desertshapes.blogspot.ca/search?q=MIB
