
Plot
Kay and Jay reunite to provide our best, last and only line of defense against a sinister seductress who levels the toughest challenge yet to the MIB's untarnished mission statement – protecting Earth from the scum of the universe. It's been four years since the alien-seeking agents averted an intergalactic disaster of epic proportions. Now it's a race against the clock as Jay must convince Kay – who not only has absolutely no memory of his time spent with the MIB, but is also the only living person left with the expertise to save the galaxy – to reunite with the MIB before the earth submits to ultimate destruction.
Trailer
Cast

Tommy Lee Jones
Kay

Will Smith
Jay

Rip Torn
Zed

Lara Flynn Boyle
Serleena

Johnny Knoxville
Scrad / Charlie

Rosario Dawson
Laura Vasquez

Tony Shalhoub
Jeebs

Patrick Warburton
Agent Tee

Jack Kehler
Ben

David Cross
Newton

Colombe Jacobsen-Derstine
Hailey

Peter Spellos
Motorman

Michael Rivkin
Man with Dog

Michael Bailey Smith
Creepy

Lenny Venito
New York Guy

Howard Spiegel
New York Guy

Alpheus Merchant
MIB Guard

Jay Johnston
Agent

Joel McKinnon Miller
Agent

Derek Cecil
Repairman Agent

Sean Rouse
MIB Agent

Peter Spruyt
MIB Customs Agent

Kevin Cotteleer
MIB Customs Agent

Marty Belafsky
MIB Customs Agent

Rick Baker
MIB Passport Control Agent

Martha Stewart
Martha Stewart

Michael Jackson
Agent M

Sid Hillman
Agent Gee

Tom Whitenight
Agent C

Nick Cannon
MIB Autopsy Agent

Andre Blair
Central Park Agent

Jeremy Howard
Bird Guy Alien / Postal Sorting Alien

Mary Stein
Bird Lady Alien

Martin Klebba
Family Child Alien

John Alexander
Jarra / Family Dad Alien

Denise Cheshire
Family Mom / Locker Alien

Ernie Grunwald
Young Postal Employee

Chloe Sonnenfeld
Young Girl at Post Office

John Andrew Berton Jr.
Split Alien Guy

William E. Jackson
Eye Guy

Doug Jones
Joey

Biz Markie
Rapping Alien

Peter Graves
Peter Graves

Linda Kim
Ambassador Lauranna

Paige Brooks
"Mysteries in History" Lauranna

Stephanie Kemp
Neuralyzed Mother

Barry Sonnenfeld
Neuralyzed Father

Victoria Jones
Neuralyzed Daughter

Michael Garvey
Corn Face

Michael Dahlen
Flesh Balls

Kevin Grevioux
Pineal Eye

Derek Mears
Mosh Tendrils

Sonny Tipton
Dog Poop

John Richardson
Postman

Philip Goodwin
Diner Guy

Tim Blaney
Frank the Pug (voice)

Greg Ballora
Sleeble (voice)

Carl J. Johnson
Gleeble (voice)

Thom Fountain
Neeble (voice)

Brad Abrell
Mannix (voice)

Richard Pearson
Gordy (voice)

Rick Avery
Subway Passenger (uncredited)

Michael Beardsley
Suspicious Video Store Patron (uncredited)

Michael Buonomo
College Student (uncredited)

Kristin Charney
Family Mom (uncredited)

Patrick Coleman Duncan
'History's Mysteries' Alien (uncredited)

Darrell Foster
MIB Autopsy Agent (uncredited)

Ned Gorman
Cockroach on Sidewalk (voice) (uncredited)

Gene LeBell
Subway Passenger (uncredited)

Pete Macnamara
Man in Black (uncredited)

Drew Massey
Worm Guy (uncredited)

Matthew McGrory
Tall Alien (uncredited)

Christopher Metas
Alien Accountant (uncredited)

Bart Mixon
Alien Puppeteer (uncredited)

Alexandra O'Hara
Diner Waitress (uncredited)

David Patykewich
Bald Kid Alien (uncredited)

Martin Pfefferkorn
Homeless Alien Collaborater (uncredited)

David C. Roehm Sr.
Alien (uncredited)

Leo Rogstad
New Yorker on His Cell (uncredited)

Thomas Rosales Jr.
Subway Passenger (uncredited)

Brandee Sanders
Subway Business Woman (uncredited)

Hannah Sim
Head-Bobbing Alien (uncredited)

Peter Siragusa
Mayor of Grand Central Terminal Locker Aliens (voice) (uncredited)

Daniel Browning Smith
Aquarium Boy (uncredited)

Brian Steele
Sharkmouth (uncredited)

Mark Steger
Quadraped Alien (uncredited)

Alan Tuskes
Lobsterhead Alien (uncredited)

Shannon Watson
70's MIB Agent (uncredited)

Bo Welch
Astronaut (uncredited)