Dwayne Johnson

Character: Dr. Smolder Bravestone

Kevin Hart

Character: Franklin 'Mouse' Finbar

Jack Black

Character: Professor Sheldon 'Shelly' Oberon

Karen Gillan

Character: Ruby Roundhouse

Awkwafina

Character: Ming

Alex Wolff

Character: Spencer Gilpin

Morgan Turner

Character: Martha Kaply

Madison Iseman

Character: Bethany

Ser'Darius Blain

Character: Anthony ‘Fridge’ Johnson

Brittany O'Grady

Character:

Burn Gorman

Character:

Bebe Neuwirth

Character: Nora

Danny DeVito

Character: Eddie

Lamorne Morris

Character: Heater Repair Guy

Marin Hinkle

Character: Spencer's Mom

Nick Jonas

Character: Jefferson 'Seaplane' McDonough

Rhys Darby

Character: Nigel Billingsley

Dan Hildebrand

Character:

Jack Jewkes

Character: