Jack Black Professor Sheldon 'Shelly' Oberon
Dwayne Johnson Dr. Smolder Bravestone, Producer
Kevin Hart Franklin 'Mouse' Finbar
Danny DeVito Eddie
Bebe Neuwirth Nora
William Teitler Executive Producer
Karen Gillan Ruby Roundhouse
Awkwafina Ming
Colin Hanks Alex
Danny Glover Milo
Ashley Scott Ashley (uncredited)
Marin Hinkle Spencer's Mom
Ser'Darius Blain Anthony 'Fridge' Johnson
Wolfgang Stegemann Fight Choreographer
Vince Pisani Pharmacy Manager
Troy Butler Stunts
Alex Wolff Spencer Gilpin
Jake Kasdan Director, Producer, Writer
Madison Iseman Bethany
Rob Mars Stunts
Paul Story Animation Supervisor
Nick Jonas Jefferson 'Seaplane' McDonough
Lamorne Morris Heater Repair Guy
John Ross Bowie Cavendish
Hiram Garcia Producer
Josh Diogo Stunts
Dave Van Zeyl Stunts
Danny Le Boyer Stunts
Justin Eaton Stunts
Tom McComas Stunts
Rory McCann Jurgen the Brutal
Jeanne McCarthy Casting Director
Allan Henry Stunts
Deobia Oparei Elevator Guard
Stephane Fiossanangaye Stunts
Rhys Darby Nigel Billingsley
Dania Ramirez Lady in Red
Gyula Pados Director of Photography
Michael Beasley Coach Davis (uncredited)
Rafael E. Sánchez Gaffer
J.J. Dashnaw Stunts
Thomas Joseph Culler Stunts
Matt Berberi Stunts
Isaac Hamon Stunt Coordinator
Jeff Pinkner Writer, Executive Producer
Dorothy Steel Village Elder
Lucy DeVito Maiden
Dany Garcia Producer
Marc Canonizado Stunts
Chris Van Allsburg Executive Producer, Book
Vanessa Cater Red Headed Marauder (uncredited), Stunts
Greg Harris Stunts
Geoffrey Haley Steadicam Operator
Theo Kypri Stunts
Derek Russo Key Master
Leslie Simms Cake Lady
Wade Eastwood Second Unit Director, Stunt Coordinator
Chad Bowman Stunts
Bill Brzeski Production Design
Lucy Cork Stunt Double
Scott Rosenberg Writer, Executive Producer
Charles Green Bartender (uncredited)
Simeon Freeman Stunts
Jimmy Waitman Stunt Double
Henry Jackman Original Music Composer
Riley Flanagan Key Set Production Assistant
Nick Gomez Oasis Drunk
Mark Breakspear Visual Effects Supervisor
Morgan Turner Martha Kaply
Madison Johnson Little Bethany Vreeke
Morgan Brown Fortress Guard
Matt Rebenkoff First Assistant Director