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Don't worry about a thing, folks, I used to live here. Came by to pick up a few things.
~ K apologizing to a random family

Agent K, a.k.a. Kevin Brown, is one of the two main protagonists, alongside Agent J, in the Men in Black franchise and is the deuteragonist of the Men in Black trilogy and in the animated series. He is portrayed by Tommy Lee Jones in the Men in Black film series. In Men in Black III, his younger self is played by Josh Brolin.


Before MiB

Originally Kevin Brown, he helped found MiB back in the 50's. It was not until March 2, 1961, that contact was made outside New York City. After this, Kay became fully devoted to his work.

Early MiB Years

Kay was originally made partner with an agent named Alpha. However, Alpha stole a Cosmic Integrator, and went rogue, combining his body with alien pieces. At some point, he was made partner with another founder, Dee. During the 60's, his future partner, Agent J, came to the past, and the duo would team up to defeat Boris, so Kay would live and Earth would be saved. At an unknown date (sometime in the 70's or 80's), Kay and other agents protected Princess Lauranna of Zartha, and was entrusted with the Light of Zartha to stop it from getting into Serleena's hands. However, Serleena kills Lauranna, and Kay pretends to launch the Light into space. Serleena follows, and the Light is later revealed to be Lauranna's (and implied to be Kay's) daughter, Laura Vasquez.

Men in Black

In the first film, after having to kill an alien, Mikey, his partner finally wants to retire. Wanting so, Kay neuralyzes Agent D. In need of a new partner he recuits an NYPD officer, now named Agent J. Together, the duo must track down Edgar the Bug, a Bug that wants the energy of the Arquilian Galaxy. In the end, Kay "retires", and Jay becomes agent to Elle. It is explained that he was in coma for all of those years, and returned to his wife.

Animated Series

In the animated series, Kay was not neuralyzed and is still an agent to the MiB. He is still partner to Jay, and Elle still works for the MiB. During the series, he and Jay must constantly fight off aliens, and even his old partner Alpha.

Men in Black II

In the second film, Jay must find the neuralyzed Kay to stop Serleena. Jay finds him as a Postal Worker in Massachusetts. Here, Jay must de-neuralyze Kay, so they can stop Serleena from destroying Zartha and Earth.

Men in Black III

In the third film, Jay must go back in time to stop the villain, Boris from killing a young Kay to destroy the Earth.



  • Before Tommy Lee Jones was cast as Agent K, Clint Eastwood originally auditioned for the role of Agent K.