Christoph Waltz as Humphrey Wells / John Wells Snr

Patrick Gibson as Paul Carpenter

Damon Herriman as Monty Smith-Gregg

Sophie Wilde as Sophie Pettingel

Sam Neill as Dennis Tanner

Demi Harman as Job Applicant

Rachel House as Professor Nienke Van Spee

Miranda Otto as Countess Judy

Chris Pang as Casimir Suslowicz

Arka Das as Neville

Jessica De Gouw as Rosie Tanner

Chris Story as Mr. Roden

Lin Yin as Delia Bryson

Jason Wilder as Leon (Man at Fountain)

Finn Treacy as Humphrey (12 yrs old)

Connor Treacy as Humphrey (20 yrs old)

Karen Peart as Dry Cleaner

Mercy Woods as Woman in Crowd

Rasoul Afkhamizakerzadeh as Elite (voice)

Sho Eba as Supermarket Customer

Hazel Phillips as Woman (Lost Dog Poster)

Diana Lin as Mrs. Dao

Diana Lin as Mrs. Dao (Bank of the Dead)

Nikhil Singh as Laundry Van Worker

Ida Conte as Hotel Cleaner

Christopher Sommers as Arthur Tanner Goblin

Tori Webb as Rosie Tanner Goblin

Anna Yen as Tea Lady Goblin

Chris Bridgewater as Tunnel Rigger Goblin

Vivienne Abitia as Receptionist Goblin

Jessica Bowles as Punk Waste Management Goblin

Seth Collier as Tunnel Blaster Goblin

Stephen Walker as Keeper of the Shelves Goblin

Grace Keane-Jones as Additional Goblin

Paul Adams as Print Room Worker