AMC Theatres 28s Show all Josh Brolin (Young Agent K) : Brolin’s portrayal is described as a "spot-on perfect impression" of Tommy Lee Jones . Reviewers note his ability to capture Jones's specific "tommyisms," including his gravelly, laconic voice and subtle facial ticks. His performance is credited with adding a much-needed "spark" and emotional depth to the movie. Will Smith (Agent J) : Returning after a four-year break from the big screen, Smith is praised for his enduring charm and his natural "odd-couple rapport" with both the present-day and younger versions of K. His performance is described as a return to form, blending his signature humor with more range and "acting talent" than in previous installments. Tommy Lee Jones (Agent K) : Although Jones has limited screen time due to the time-travel plot, his presence is noted for providing "perfect closure" to the character's story arc. Some reviewers felt his inclusion was perfunctory, while others enjoyed seeing the continuation of the J and K dynamic. IMDb +10 Show more Supporting Cast & Villains Jemaine Clement (Boris the Animal) : Clement is recognized for his "inspired" casting and his ability to create a legitimately dangerous and physically imposing villain. Though some felt his character could have used more screen time, his performance is often called one of the best parts of the movie. Michael Stuhlbarg (Griffin) : Stuhlbarg's performance as the clairvoyant alien Griffin is frequently highlighted for its "twinkle" and emotional appeal, providing a unique and "hilarious" addition to the cast. Emma Thompson & Alice Eve (Agent O) :
as the villainous Boris the Animal chewed scenery with gleeful menace. Lanky, prosthetic-laden, and screaming “Let’s agree to disagree!”—Clement turned a one-note beast into a surprisingly funny, terrifying alien. actors in mib 3
The heart of the franchise remains the chemistry between Agents J and K. In this installment, their bond is tested across decades. AMC Theatres 28s Show all Josh Brolin (Young
Eve plays the 1969 version of O, portraying a flirtatious and professional dynamic with young K that explains their history in the present. The Villains and Support Will Smith (Agent J) : Returning after a