Video of a supposed gray alien has long surfaced online and even made it to the realms of the mainstream, getting "debunked" as a hoax on a Syfy TV show. However, considering the gray alien shown in the video fits the real, classified descriptions of gray aliens that ufologists have collected over the years (including TexasUFOs) through meticulous research and investigation, and many FOIA requests, I think it's worth taking a look at. As well, one can never disregard the influence of the Men in Black or other attempts to misinform the public about a sighting. The pictures and video below show a quintessential gray alien supposedly captured by the Russian KGB; the video gives more detail about the alleged relationship between Russia and and the aliens, and an agreement that prohibited the Russians from recording their communications with the aliens.
It's interesting how similar this gray alien is to the aliens filmed in the "documentary" UFO Abduction, which some believe is inspired by or partially sourced from a real video of a real alien abduction (investigation update coming soon):
Gray aliens crash landing on this planet, and abducting humans, is a long-documented phenomenon that has been investigated by UFO researchers as well as other more mainstream journalists. Though the theories vary about what exactly they are and what they are here for - theories including gray aliens being biological robots who must do the bidding of other more intelligent extra-terrestrials - there isn't much debate in the community anymore about whether or not they exist! So, one must then wonder... if they exist, one of the so-called videos showing a gray alien (and there have been many that have surfaced online!) must also exist.