Not much to say here :P

Tallest character is the horse (so far)

while the smallest is the Gray

NOTE: oh my gooood! look how tiny he is!!! Good lord!

But yes, from the accounts of alien "abduction" i have researched, there have been many reports of Grays being this short! And also some ranging to nearly 8'!

From my own recent findings, it appears that the Zeta Reticulans are quite varied in their own appearance like us Terrans! (aka earthlings)