Reticulans

The Reticulans (also known as the Greys, Alien Greys, or Grey Aliens) is a highly advanced humanoid species in the Orion Spiral Arm. The Reticulans were first encountered in the Zeta Reticuli system, on the planet Serpo, which is located in the Reticulum Sector. Coalition forces attempted to pacify the species, deploying Second Fleet to quell any resistance. However, the Reticulan technology was extremely advanced, even for Coalition standards. Second Fleet met fierce resistance, taking many casualties in the effort to conquer Zeta Reticuli. Upon defeating the Greys, the forces of Second Fleet discovered that the Reticulan species maintained inhabited colonies on every habitable planet in the Reticulum Sector. However, the aliens fled the sector before they could be pacified by the Coalition. A few thousand Reticulans are ruled over by the Coalition on Zeta Reticuli, but the vast majority of the species remains at large.

What virtually all of humanity is oblivious to is the true objectives of the Reticulan species. The Reticulans were the first race genetically bred with the DNA of the Sowers, and during the early days of their existence the Reticulans and Sowers maintained close relations. After the Sowers disappeared, the Reticulans took it upon themselves to, as a species, retrace the steps of their progenitors and reestablish contact with their father-species. The image of Reticulans was famous during the age of the Old Earth Empires thanks to their alleged experimenting on human subjects. These experiments took place because the Reticulans believed human DNA may have been imprinted with code left by the Sowers, since humanity was the youngest known Seeded race in the Galaxy. This proving to be false, mankind was eventually abandoned by the Sowers, but their image remained present in human culture for centuries.