M.I.B.³

Will Smith

Agent J

Tommy Lee Jones

Agent K

Josh Brolin

Young Agent K

Jemaine Clement

Boris The Animal

Emma Thompson

Agent O

Michael Stuhlbarg

Griffin

Mike Colter

Colonel

Nicole Scherzinger

Boris' Girlfriend

Michael Chernus

Jeffrey Price

Alice Eve

Young Agent O

David Rasche

Agent X

Keone Young

Mr. Wu

Bill Hader

Andy Warhol

Cayen Martin

Colonel's Son

Clarke Thorell

Prison Guard #1

Adam Mucci

Prison Guard #2

Tom McComas

Prison Guard #3

Douglas Crosby

Prison Guard #4