Grey-skinned (sometimes green-skinned) humanoids, usually 1 m (3.3 ft) tall, hairless, with large heads, black almond-shaped eyes, nostrils without a nose, slits for mouths, no ears and 3–4 fingers including thumb. Greys have been the predominant extraterrestrial beings of alleged alien contact since the 1960s.[5]
Diminutive green humanoids. Even though a few abductions have referred to green skin, no report has ever involved anything that would fit the classic cultural stereotype of "little green men". They are included here only for cultural reference.[10]
Elongated visual artifacts appearing in photos and video recordings, sometimes claimed to be extraterrestrial beings. Generally thought to be caused by motion blur from flying insects.
^"Frequently asked questions". European Alien Species Information Network. Archived from the original on 2021-04-21. Retrieved 2021-07-05. Non-native organisms that become established in a new environment.
^Nickell, Joe (November 2000). "Investigative Files: The Flatwoods UFO Monster". Skeptical Inquirer. 24 (6). Amherst, NY: Committee for Skeptical Inquiry. ISSN0194-6730. OCLC4081591. Archived from the original on 2011-06-30. Retrieved 2015-06-02. The 'monster' reportedly had a 'man-like shape' and stood some ten feet tall, although Barker (1953) noted that 'descriptions from the waist down are vague; most of the seven said this part of the figure was not under view.'
^ abBlackmore, Susan (May 1998). "Abduction by Aliens or Sleep Paralysis?". Skeptical Inquirer. 22 (3). Amherst, NY: Committee for Skeptical Inquiry. ISSN0194-6730. OCLC4081591. Archived from the original on 2010-08-13. Retrieved 2015-06-02. The '[G]ray' is about four feet high, with a slender body and neck, a large head, and huge, black, slanted, almond-shaped eyes. Grays usually have no hair and often only three fingers on each hand. There are two vastly different types of so called "greys" both from the Zeta Reticulan star system. The Hollywood "grays" are the typical on seen in pop culture, however, they should not be confused with the slightly taller greyish blue NHI known as Ebens. The difference in the them is that the greys are not biologically born. They are engineered, augmented, created and controlled by their creators and other sentient beings. The Ebens are biological entities as we know them on earth. Meaning they are conceived and born biologically. Greys are often considered emotionally "stunted" where as Ebens are empathetic and sympathetic like most mammals.
^Musgrave, Beth (August 22, 2005). "Kelly Green Men get new venue". Lexington Herald-Leader. Archived from the original on 12 January 2009. Retrieved November 24, 2008 – via AccessMyLibrary.
^Nickell, Joe (November 2006). "Siege of 'Little Green Men': The 1955 Kelly, Kentucky, Incident". Skeptical Inquirer. 30 (6). Amherst, NY: Committee for Skeptical Inquiry. ISSN0194-6730. OCLC4081591. Archived from the original on 2013-11-04. Retrieved 2015-06-03. [Green] was apparently later injected by the national media, although 'Lucky' Sutton's son now says his father described them as 'silver' with 'a greenish silver glow'...
^Lewis, Tyson; Kahn, Richard (Spring 2005). "The Reptoid Hypothesis: Utopian and Dystopian Representational Motifs in David Icke's Alien Conspiracy Theory". Utopian Studies. 16 (1). University Park, PA, US: Penn State University Press [for the Society for Utopian Studies]: 45–75. doi:10.2307/20718709. ISSN1045-991X. JSTOR20718709. Icke, ... is now today's most (in)famous proponent of what we are calling the 'Reptoid Hypothesis'—the idea that alien lizards conspiratorially control the Earth and with it human destiny.