http://highlandscurrent.com/wp-content/uploads/2017/05/joel-the-grey.png
Theres a whole book on it somewhere.
Apparently Greys originate from Earth in the distant future. They are either Evolved humans or possibly a clones of a lab grown creature.
>>19549151
Gray, white, scaly planets?
>>19549151
Greys are from the Zeta Reticuli star system.
Same planet as us, just outside our dome.
>>19549151
thread theme to go with OPs pic
https://www.youtube.com/watch?v=Ag1o3koTLWM