Man in Black

A man in black is a mysterious figure dressed entirely in black, often associated with conspiracy theories about government agents who intimidate witnesses to UFO sightings or paranormal events: Two men in black showed up asking questions about what I saw.

The image extends to any shadowy authority figure whose dark attire signals secrecy or menace.

Johnny Cash embraced the title as a stage persona, and the phrase became the name of a science fiction film franchise about secret alien-monitoring agents.