The Men In Black - or MIB's as they are sometimes called are a group that supposedly show up to harass or intimidate witnesses of UFO sightings and related phenomena the government does not want the public to know about.
They usually make vague or sometimes specific threats to stop witnesses from talking or sharing information. They confiscate any physical proof of UFO related sightings -- such as photos, artefacts, or audio / video recordings.
They wear their trademark black suit and perhaps a black overcoat. The fabric of their clothing has been described as strangely "shiny" or thin, but not silky - almost as if they have been cut from a new type of fabric.
Some report that MIB all look alike. This brings to mind the villain in the movie Matrix and reality nothing more that projected illusion created by consciousness.
Their often mechanical behavior has caused them to be described by some as being like robots or androids.
Their voices are monotone and their faces emotionless. They speak in a dull monotone voice, like a computer, and are dark-complected with high cheekbones, thin lips, pointed chin, and eyes that are mildly slanted.
They allegedly travel in groups of three, but are sometimes alone.
The are usually seen driving black mint-condition late model luxury cars such as Cadillacs or Lincolns. Their cars often operate with the headlights off, but ghostly purple or greenish glows illuminate the interior. Unusual insignia have been seen emblazoned on the doors and the license plates are always unidentifiable or untraceable.
Many have reported seeing these vehicles after a reported UFO sighting, ET abduction, or crop circle finding.
Some people believe the MIB are government agents. Some people believe that are extraterrestrials.
There have been reports of MIBs following people around in black helicopters.
The first reported occurrence of Men in Black was allegedly Albert K. Bender, the editor of a flying saucer publication called the Space Review.
In the October 1953 issue he placed an announcement stating that he had come across information that would solve the flying saucer mystery but could not print it because he was ordered not to. He ended the announcement warning others in UFO research to be very cautious.
He then stopped publication. Later in an interview Bender stated that three men wearing dark suits had ordered him to stop publishing UFO material, and that he had complied with the order because he had been "scared to death" of them. He later published a book called Flying Saucers and the Three Men in Black.
In his book, The UFO Silencers, Timothy Beckley has attempted to provide an overview of important and representative MIB encounters. According to Beckley, MIB have been with us for many hundreds of years, speculating that such diverse characters from the history of witchcraft and folklore as the Elizabethan Black Men, the Native American Black Man and late nineteenth century reports of malevolent traveling salesmen, might have been manifestations of what we now know as Men in Black.
According to John Keel, the MIB often state that they are representatives of the Nation of the Third Eye.
George Hunt Williamson (an early MIB contactee) in his book Other Tongues, Other Flesh, states that secret societies allied with Sirius use the Eye of Horus as an insignia. This symbol has also been seen on the MIB. The secret societies believe that there is a Great White Lodge on earth. They call it Shamballa -- and consider it to be the spiritual center of the world. Theosophists such as Alice Bailey say that the Great White Lodge is on Sirius.
This is confirmed by Stephen Jenkins, author of the book The Undiscovered Country, who was told by Buddhist priests that Shamballa was located in the constellation of Orion. If the All-Seeing-Eye is a symbol of Sirius' earth-allies and the MIB wear that symbol, and if Shambhala represents the Great White Lodge on Earth - then the MIB are emissaries of Shamballa. The entrance to Shambhala on Earth is usually placed in the trans-Himalayan region. Some assert it is in the heart of the Gobi Desert (where there have been allegations of crashed disks and bases).
According to the explorer Nicholas Roerich, there are caves in the Himalayan foothills that have subterranean passages. In one of the these passages, there is a stone door that has never been opened, because the time for its opening has not yet arrived.