Four misfits find themselves struggling with ordinary problems when they are suddenly pulled through a mysterious portal into the Overworld: a bizarre, cubic wonderland that thrives on imagination. To get back home, they'll have to master this world while embarking on a magical quest with an unexpected, expert crafter, Steve.
Jason Momoa
Character: Garrett
Jack Black
Character: Steve
Sebastian Eugene Hansen
Character: Henry
Emma Myers
Character: Natalie
Danielle Brooks
Character: Dawn
Jennifer Coolidge
Character: Vice Principal Marlene
Rachel House
Character: Malgosha (voice)
Allan Henry
Character: Malgosha (Creature Performer)
Bram Scott-Breheny
Character: Young Steve
Moana Williams
Character: Young Garrett
Jemaine Clement
Character: Daryl / Bruce (voice)
Mark Wright
Character: HR Person
Yvette Parsons
Character: Delivery Person
Hiram Garcia
Character: Mr. Gunchie
Bret McKenzie
Character: Nitwit Onset Performer
Jared Hess
Character: General Chungus (voice)
Batanai Mashingaidze
Character: Matty the Waitress
Amanda Billing
Character: Henry's Mother
Tommy Broadmore
Character: Trevor
Frankie Creagh-Leslie
Character: Trevor's Friend
Alison Quigan
Character: Chuggy Executive #1
John Smythe
Character: Chuggy Executive #2
Alex Tunui
Character: Secretary
Craig Mckinney
Character: Miner
Joel Rindelaub
Character: Arcade Judge
Antony Degreat
Character: Gamer #1
Victor Kazaroho
Character: Gamer #2
Ben Carpenter
Character: Henry Picture Double
Rowan Bacal
Character: Greta
Brennan Standing
Character: Lee
Dylan Chitekwe
Character: Miles
Matt Berry
Character: Nitwit (voice)
Alice May Connolly
Character: Alex Double
Jens Bergensten
Character: Waiter
Oliver Brotherhood
Character: Auction Attendee
Daniel Middleton
Character: Auction Attendee
Elizabeth Batty
Character: Auction Attendee
Jessica Bravura
Character: Auction Attendee
Kate McKinnon
Character: Alex (voice) (uncredited)