Question regarding 3rd density.

[βαθμιαίος]

Ra: I am Ra. This is a new line of questioning, and deserves a place of its own. The ones who were harvested to your sphere from the sphere known before its dissolution as other names, but to your peoples as Maldek, incarnated, many within your Earth’s surface rather than upon it. The population of your planet contains many various groups harvested from other second-dimension and cycled third-dimension spheres. You are not all one race or background of beginning. The experience you share is unique to this time/space continuum.

That's a good point. Ra says that some Bigfoot are third-density entities (from Maldek) incarnated into second-density bodies.