Dwayne Johnson

Dr. Smolder Bravestone

Acting

Kevin Hart

Franklin 'Mouse' Finbar

Acting

Jack Black

Professor Sheldon 'Shelly' Oberon

Acting

Karen Gillan

Ruby Roundhouse

Acting

Awkwafina

Ming

Acting

Alex Wolff

Spencer Gilpin

Acting

Morgan Turner

Martha Kaply

Acting

Madison Iseman

Bethany

Acting

Ser'Darius Blain

Anthony ‘Fridge’ Johnson

Acting

Brittany O'Grady

Acting

Burn Gorman

Acting

Bebe Neuwirth

Nora

Acting

Danny DeVito

Eddie

Acting

Lamorne Morris

Heater Repair Guy

Acting

Marin Hinkle

Spencer's Mom

Acting

Nick Jonas

Jefferson 'Seaplane' McDonough

Acting

Rhys Darby

Nigel Billingsley

Acting

Dan Hildebrand

Acting

Jack Jewkes

Acting