Ben Stiller as Tim Dingman

Jack Black as Nick Vanderpark

Rachel Weisz as Debbie Dingman

Christopher Walken as J-Man

Amy Poehler as Natalie Vanderpark

Ariel Gade as Lula Dingman

Sam Lerner as Michael Dingman

Lily Jackson as Nellie Vanderpark

Connor Matheus as Nathan Vanderpark

Hector Elias as Eduardo

Angee Hughes as Woman at Play

Manny Kleinmuntz as Dimitriov

Blue Deckert as Cal

John Gavigan as Les

Terry Bozeman as 3M Worker

Brian Reddy as Mr. Parmenter

E.J. Callahan as Bartender

Edith Jefferson as Mable

Tom McCleister as Bosco

Tumbleweed as Lester

John Marrott as State Trooper

Ofer Samra as Pete

Daniel Lugo as Italian Minister

Frank Roman as Translator

Randall Bosley as Oscar

Amy Higgins as Vanderpark Nanny

Curtis Andersen as Young Kissing Man

Maricela Ochoa as Dr. Fernandez

Tara Karsian as Lab Assistant

Ted Rooney as Upscale Auctioneer

Douglas Roberts as Downscale Auctioneer

Melissa Pouk as Girl #1 at Play (Bee)

Ashlynn Rose as Girl #2 at Play (Butterfly)

Hannah Rosenberg as Girl #3 at Play (Flower)

Atiana Coons-Parker as Girl #4 at Play (Rock)

Jacob Greenblatt as Boy #1 at Play (Duck)

Cayden Boyd as Boy #2 at Play (Wolf)

Nicholas Sugimoto as Boy #3 at Play (Worm)

Jaye K. Danford as Campaign Emcee

Gustavo Hernandez as Pool Worker

Kent Shocknek as Newscaster

Tracy Dixon as Teacher at Play

Boris Shitikov as Himself