Grey Alien 

A large eyed extraterrestrial from the Zeta Reticuli Star System, their main hobbies are abducting Humans, anal probing, creating ET/Human hybrids and long walks on the beach, they are occasionally referred to as Reticulans or Zeta Reticulans

Michael: My grandfather was abducted by Grey aliens once!
John: Did they have huge tits?
Michael: No, they where all short and bald and shit.
John: Well, that's disappointing.

Grey Alien by Big, Big, Martian July 18, 2022

Alien Grey

A supposed extraterrestrial race who are extremely well known. They are generally reffered to as non - hostile by believers, but their "goal" here on Earth is not known. They are described by abductees as being 3.5-4 feet tall (short Grey) and 5 feet tall (tall Grey), having grey skin and large, almond shaped black eyes, large head, and frail. Some people think their objective is to keep Humans alive after a catacalysmic event.

Alien Greys have epic eyes

Alien Grey by Xzonza 1 September 19, 2009

Grey Abducter Alien 

Species of extra terrestrial, sterile hybrid species, who collect haploid (eg sperm and ova) samples from a variety of DNA based species in the Milky Way Galaxy. In order to vary their gene pool, as they reproduce by cloning.

The sampling procedure involves placing donors into trance, then beaming themn aboard their crafts, and examining and obtaining samples, then returning said donors.

I read about Gray Aliens from a book called "Communion".

Grey Abducter Alien by Kerb November 27, 2004

Grey Abducter Alien 

A gigantic headed grey skinned Alien. It has extremly large black eyes. They abduct alchoholics, so no one believes there story.
Much like Bill Gates!

" Oh, yeah, last night i WAS abducted!"

Grey Abducter Alien by Scott Methy July 18, 2003

Greylien 

A type of UFO occupant. Typically diminutive, grey-skinned being with large black eyes, frail body and a slit for a mouth. The also have flat, duck-like feet but this is never shown in films or TV as undermines their sinister, ethereal quality.

Purportedly from the Zeta Reticuli star system but fond of hanging around the mid-western United States, waiting to fondle truckers, rednecks, fishermen, loggers and people looking for a publisher.

Abilities; walking into locked rooms, designing and flying circular craft, turning radios on and off with science/telepathy, levitation and fingering orifices.

First appearance in fiction; possibly the work of HG Wells.

Witness 1; wait!... what are those beings in the clearing... my God!
Wotness 2: Oh they're just Greyliens. They aren't famous aliens like Klaatu and Gort.
Witness 1; or Han and Chewie.
Witness 2: is Han an Alien?
Witness 1; technically he was.

Greyliens return to saucer, feeling despondent. Nobody notices.

Greylien by Klaatu's Nikto October 11, 2020

Greylien 

A person who is not full white and not full black. Commonly known as a greylien. Other variations include "grey mysterio" for a greylien that is mysterious.

Hide your sheep the greylien is coming over soon.

Greylien by miguel8o September 22, 2017

Greyliens 

An aborted concept in this realm where once beautiful beings go down any series of terrible evolutionary paths and result in a very small number of emotionless, blank-eyed beings that are only concerned with darting around the Universe really quickly to find what they once were or could've become.

Greyliens always crash land and die or fly back to wherever they came from when they discover homo sapiens on the third rock from this one sun in the milkyway. Same goes for the greenies. Horses hate Greyliens and so do Orcas, they like the ones with long hair and colored eyes.

Greyliens by Objective Beauty Appreciator July 4, 2022