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.
101 min.
Jared Hess
| Jason Momoa | Garrett |
| Jack Black | Steve |
| Sebastian Eugene Hansen | Henry |
| Emma Myers | Natalie |
| Danielle Brooks | Dawn |
| Jennifer Coolidge | Vice Principal Marlene |
| Rachel House | Malgosha (voice) |
| Allan Henry | Malgosha (Creature Performer) |
| Bram Scott-Breheny | Young Steve |
| Moana Williams | Young Garrett |
| Jemaine Clement | Daryl / Bruce (voice) |
| Mark Wright | HR Person |
| Yvette Parsons | Delivery Person |
| Hiram Garcia | Mr. Gunchie |
| Bret McKenzie | Nitwit Onset Performer |
| Jared Hess | General Chungus (voice) |
| Batanai Mashingaidze | Matty the Waitress |
| Amanda Billing | Henry's Mother |
| Tommy Broadmore | Trevor |
| Frankie Creagh-Leslie | Trevor's Friend |
| Alison Quigan | Chuggy Executive #1 |
| John Smythe | Chuggy Executive #2 |
| Alex Tunui | Secretary |
| Craig Mckinney | Miner |
| Joel Rindelaub | Arcade Judge |
| Antony Degreat | Gamer #1 |
| Victor Kazaroho | Gamer #2 |
| Ben Carpenter | Henry Picture Double |
| Rowan Bacal | Greta |
| Brennan Standing | Lee |
| Dylan Chitekwe | Miles |
| Matt Berry | Nitwit (voice) |
| Alice May Connolly | Alex Double |
| Jens Bergensten | Waiter |
| Oliver Brotherhood | Auction Attendee |
| Daniel Middleton | Auction Attendee |
| Elizabeth Batty | Auction Attendee |
| Jessica Bravura | Auction Attendee |
| Kate McKinnon | Alex (voice) (uncredited) |