Tommy Lee Jones character Kay
Will Smith character Jay
Rip Torn character Zed
Lara Flynn Boyle character Serleena
Johnny Knoxville character Scrad / Charlie
Rosario Dawson character Laura Vasquez
Tony Shalhoub character Jeebs
Patrick Warburton character Agent Tee
Jack Kehler character Ben
David Cross character Newton
Colombe Jacobsen-Derstine character Hailey
Peter Spellos character Motorman
Michael Rivkin character Man with Dog
Michael Bailey Smith character Creepy
Lenny Venito character New York Guy
Howard Spiegel character New York Guy
Alpheus Merchant character MIB Guard
Jay Johnston character Agent
Joel McKinnon Miller character Agent
Derek Cecil character Repairman Agent
Sean Rouse character MIB Agent
Peter Spruyt character MIB Customs Agent
Kevin Cotteleer character MIB Customs Agent
Marty Belafsky character MIB Customs Agent
Rick Baker character MIB Passport Control Agent
Martha Stewart character Self
Michael Jackson character Agent M
Sid Hillman character Agent Gee
Tom Whitenight character Agent C
Nick Cannon character MIB Autopsy Agent
Andre Blair character Central Park Agent
Jeremy Howard character Bird Guy Alien / Postal Sorting Alien
Mary Stein character Bird Lady Alien
Martin Klebba character Family Child Alien
John Alexander character Jarra / Family Dad Alien
Denise Cheshire character Family Mom / Locker Alien
Ernie Grunwald character Young Postal Employee
Chloe Sonnenfeld character Young Girl at the Post Office
John Andrew Berton Jr. character Split Alien Guy
William E. Jackson character Eye Guy
Doug Jones character Joey
Biz Markie character Rapping Alien
Peter Graves character Peter Graves
Linda Kim character Ambassador Lauranna
Paige Brooks character 'Mysteries in History' Lauranna
Stephanie Kemp character Neuralyzed Mother
Barry Sonnenfeld character Neuralyzed Father
Victoria Jones character Neuralyzed Daughter
Michael Garvey character Corn Face
Michael Dahlen character Flesh Balls
Kevin Grevioux character Pineal Eye
Derek Mears character Mosh Tendrils
Sonny Tipton character Dog Poop
John Richardson character Postman
Philip Goodwin character Diner Guy
Tim Blaney character Frank the Pug (voice)
Greg Ballora character Sleeble (voice)
Carl J. Johnson character Gleeble (voice)
Thom Fountain character Neeble (voice)
Brad Abrell character Mannix (voice)
Richard Pearson character Gordy (voice)
Rick Avery character Subway Passenger (uncredited)
John D. Bair character Alien Attack Victim (uncredited
Michael Beardsley character Suspicious Video Store Patron (uncredited)
Brooke Bennett character Neuralyzed Daughter (uncredited)
Michael Buonomo character College Student (uncredited)
Kristin Charney character Family Mom (uncredited)
Ty Copeman character Car and Driver (uncredited)
Patrick Coleman Duncan character 'History's Mysteries' Alien (uncredited)
Darrell Foster character MIB Autopsy Agent (uncredited)
Ned Gorman character Cockroach on Sidewalk (voice) (uncredited)
Gene LeBell character Subway Passenger (uncredited)
Pete Macnamara character Man in Black (uncredited)
Drew Massey character Worm Guy (uncredited)
Matthew McGrory character Tall Alien (uncredited)
Christopher Metas character Alien Accountant (uncredited)
Bart Mixon character Alien Puppeteer (uncredited)
Alexandra O'Hara character Diner Waitress (uncredited)
David Patykewich character Bald Kid Alien (uncredited)
Martin Pfefferkorn character Homeless Alien Collaborater (uncredited)
David C. Roehm Sr. character Alien (uncredited)
Leo Rogstad character New Yorker on His Cell (uncredited)
Thomas Rosales Jr. character Subway Passenger (uncredited)
Brandee Sanders character Subway Business Woman (uncredited)
Hannah Sim character Head-Bobbing Alien (uncredited)
Peter Siragusa character Mayor of Grand Central Terminal Locker Aliens (voice) (uncredited)
Daniel Browning Smith character Aquarium Boy (uncredited)
Brian Steele character Sharkmouth (uncredited)
Mark Steger character Quadraped Alien (uncredited)
Alan Tuskes character Lobsterhead Alien (uncredited)
Shannon Watson character 70's MIB Agent (uncredited)
Bo Welch character Astronaut (uncredited)
