Jeff (Men in Black)

Jeff is a 200 meters long, worm-like alien living in abandoned subway lines on New York City. The name of his species has never been revealed.

Biology
Jeff is most likely lithotrophic as it has been mentioned that he eats inorganic garbage and he was seen biting off half of a subway train. He has an elongated body with no visible appendages; a large, four-mandibled mouth filled with thousands of sharp teeth; a pair of small eyes and a short, flower-mimicking antenna.

History
Jeff is one of the many extraterrestrials whose existence is kept in secret by the Men in Black. Zed mentioned that he remembers when Jeff was as small as a regular Earth worm, implying that Jeff may have been born on Earth, or lived on it for most of his life.

When Jeff entered the New York subway system, the MIB dispatched agents J and T to return him to his authorised residence. However, T became aggressive and grabbed Jeff's antenna, sending him on a rampage through the subway tunnels. Despite eating half a train, J successfully sedated him without any loss of life.

Some time later, Agents J and K came under aerial pursuit from the Kylothian queen, Serleena. In order to neutralise her threat, J lured her into the Subway tunnels and onto a collision course with Jeff. With no room to evade or time to stop, Serleena's ship crashed directly into Jeff's mouth and was immediately devoured. Despite this, Serleena survived and devoured Jeff from within, confronting the MIB agents in a more worm-like form.

Appearances

 * Men in Black II (2002)