Dwayne Johnson

Dr. Smolder Bravestone

Kevin Hart

Franklin 'Mouse' Finbar

Jack Black

Professor Sheldon 'Shelly' Oberon

Karen Gillan

Ruby Roundhouse

Awkwafina

Ming

Alex Wolff

Spencer Gilpin

Morgan Turner

Martha Kaply

Madison Iseman

Bethany

Ser'Darius Blain

Anthony ‘Fridge’ Johnson

Brittany O'Grady

Burn Gorman

Bebe Neuwirth

Nora

Danny DeVito

Eddie

Lamorne Morris

Heater Repair Guy

Marin Hinkle

Spencer's Mom

Nick Jonas

Jefferson 'Seaplane' McDonough

Rhys Darby

Nigel Billingsley

Dan Hildebrand

Jack Jewkes