Division Six was a fake division of some other agency often used by the Men in Black for cover.
- In Men in Black, Agents K and D use the name INS Division Six as cover to find Mikey. Here, the other INS Agents realize there is no Division Six. They then find the real truth only to forget. This is the first time a "Division Six" was used.
- In the animated series (episode?), a "United Nations Security Division 6" was used as cover.
- In The Long Goodbye Syndrome, a "Fire Marshal Division 6" was used by K and J to take over a cat-rescue operation from the fire department.
- In The Star System Syndrome, it's revealed that there are various divisions of Men in Black such as "The Agency" in Hollywood for alien actors, and J and K’s division is called simply "Division Six".
- In The Psychic Link Syndrome. a "Ushers Division 6" was used by K and J at a movie theater.
It is unknown whether this designation is a reference to MI6, i.e. Military Intelligence, Section 6.