The Greys Are a collective of 7,444 of the only Three known species in the universe. The Greys are The Zooidz, Invuu & Hivve, whom together formed the E.D.E.N Project. A project to seed earth with their combined DNA to create the Humans, Adam & Eve, the 4th species. They have refined the use of renewable energy and materials. The Greys travel through the Polygon network to conserve energy which allows them to travel great distances at great speeds.
