Spencer

Dwayne Johnson

Fridge

Kevin Hart

Professor Shelly Oberon

Jack Black

Ruby Roundhouse

Karen Gillan

Alex

Nick Jonas

Nigel

Rhys Darby

Van Pelt

Bobby Cannavale

Young Bethany

Madison Iseman

Coach Webb

Missi Pyle

Young Spencer

Alex Wolff

Young Fridge

Ser'Darius Blain

Tim Matheson

Young Martha

Morgan Turner

Jogger

Sean Buxton

Gamer

Mason Guccione

Spencer's Mom

Marin Hinkle

Fridge's Mom

Tracey Bonner

Girl in Car

Najah Jackson

Bethany's Mom

Natasha Charles Parker

Lucinda

Kat Altman

Natasha Parker

Teacher

Maribeth Monroe

Fussfeld

Michael Shacket

Male Gym Teacher

Jamie Renell

Principal Bentley

Marc Evan Jackson

Miss Mathers

Carlease Burke

Bivouac Biker

Jason New

Bread Vendor

William Tokarsky

Alex Vreeke

Colin Hanks

Kid at Bazaar

Rohan Chand

Scorpion Recipient

Tait Fletcher

Transportation Shed Guard

Steve Dunlevy

Transportation Shed Guard

Rob Mars

Jake Kasdan

Director

Jake Kasdan