>>514671441
Its possibly easier.

Biological motor, a muscle, made of cells, is more high tech than a simple robot of metals.

I believe the grey drone was an animal on a planet. It was taken, after genetic testing, they were able to isolate the parts of the brain that control its body, removing all other parts like personality or soul.

Supposed scientist who saw these wrote a long thing on reddit few years ago, reat in link:

https://www.reddit.com/r/aliens/comments/14rp7w9/from_the_late_2000s_to_the_mid2010s_i_worked_as_a/

>>514671500
Those cat aliens also have been seen by eyewitnesses. Also nordics have oval pupils supposedly. They use contact lenses to hide it while in public.

>>514671886
Lol