Dwayne Johnson
Dr. Smolder Bravestone
Kevin Hart
Franklin 'Mouse' Finbar
Jack Black
Professor Sheldon 'Shelly' Oberon
Karen Gillan
Ruby Roundhouse
Rhys Darby
Nigel Billingsley
Bobby Cannavale
Van Pelt
Nick Jonas
Jefferson 'Seaplane' McDonough
Alex Wolff
Young Spencer Gilpin
Ser'Darius Blain
Young Anthony 'Fridge' Johnson
Madison Iseman
Young Bethany Walker
Morgan Turner
Young Martha Kaply
Sean Buxton
Jogger
Mason Guccione
Gamer
Marin Hinkle
Spencer's Mom
Tracey Bonner
Fridge's Mom
Najah Jackson
Girl in Car
Natasha Charles Parker
Bethany's Mom
Kat Altman
Lucinda
Maribeth Monroe
Teacher
Missi Pyle
Coach Webb
Michael Shacket
Fussfeld
Jamie Renell
Male Gym Teacher
Marc Evan Jackson
Principal Bentley
Carlease Burke
Miss Mathers
Jason New
Bivouac Biker
Rohan Chand
Kid at Bazaar
William Tokarsky
Bread Vendor
Tait Fletcher
Scorpion Recipient
Stephen Dunlevy
Transportation Shed Guard
Rob Mars
Transportation Shed Guard
Colin Hanks
Alex Vreeke (uncredited)
Virginia Newcomb
Alex's Wife (uncredited)
Sylvia Jefferies
Jogger's Wife (uncredited)
Daniel Salyers
High School Student (uncredited)
Tim Matheson
Old Man Vreeke (uncredited)
Tad Sallee
Skater Punk (uncredited)
Ryan Baughman
Boy #1 (uncredited)
Maddie Nichols
Kid #2 (uncredited)
Ashley Lonardo
Kid #3 (uncredited)
Friday Chamberlain
Amazon Warrior (uncredited)
Ted Williams
Gypsy Cowboy (uncredited)
Juan Gaspard
The Spy (uncredited)
Scott Hunter
Van Pelt's Henchman (uncredited)
Maiya Boyd
Cute Bazaar Kid (uncredited)
Natasha Mayet
Berber Lady (uncredited)
Danny Pardo
Bazaar Vendor (uncredited)