Grey a̳l̳i̳e̳n̳s, also referred to as “A̳l̳i̳e̳n̳ Greys”, “Greys”, “Grays”, “Roswell Greys”, and “Zeta Reticulans”, are alleged e̳x̳t̳r̳a̳t̳e̳r̳r̳e̳s̳t̳r̳i̳a̳l̳ beings whose existence is promoted in U̳F̳O̳logical, paranormal, and New Age communities, and who are named for their unique skin color.
Forty-three percent of all reported a̳l̳i̳e̳n̳ encounters in the United States describe Grey a̳l̳i̳e̳n̳s.Such claims vary in every respect including their nature (ETs, extradimensionals, demons, or machines), origins, moral dispositions, intentions, and physical appearances (even varying in their eponymous skin color). A composite description derived from overlap in claims would have Greys as small-bodied s̳e̳x̳less beings with smooth grey-colored skin, enlarged hairless head and large black eyes.
The origin of the idea of the Grey is commonly associated with the Betty and Barney Hill abduction claim which took place in 1961, although skeptics see precursors in science fiction and earlier paranormal claims. The Grey a̳l̳i̳e̳n̳s are also famous from earlier depictions of the Roswell U̳F̳O̳ incident from 1947.