 Patrick GibsonPaul Carpenter | Paul Carpenter |
 Christoph WaltzHumphrey Wells / John Wells Snr | Humphrey Wells / John Wells Snr |
 Damon HerrimanMonty Smith-Gregg | Monty Smith-Gregg |
 Sophie WildeSophie Pettingel | Sophie Pettingel |
 Sam NeillDennis Tanner | Dennis Tanner |
 Demi HarmanJob Applicant | Job Applicant |
 Rachel HouseProfessor Nienke Van Spee | Professor Nienke Van Spee |
 Miranda OttoCountess Judy | Countess Judy |
 Chris PangCasimir Suslowicz | Casimir Suslowicz |
 Arka DasNeville | Neville |
 Jessica De GouwRosie Tanner | Rosie Tanner |
| CChris StoryMr. Roden | Mr. Roden |
 Lin YinDelia Bryson | Delia Bryson |
 Jason WilderLeon (Man at Fountain) | Leon (Man at Fountain) |
 Finn TreacyHumphrey (12 yrs old) | Humphrey (12 yrs old) |
| CConnor TreacyHumphrey (20 yrs old) | Humphrey (20 yrs old) |
| KKaren PeartDry Cleaner | Dry Cleaner |
| MMercy WoodsWoman in Crowd | Woman in Crowd |
| RRasoul AfkhamizakerzadehElite (voice) | Elite (voice) |
| SSho EbaSupermarket Customer | Supermarket Customer |
 Hazel PhillipsWoman (Lost Dog Poster) | Woman (Lost Dog Poster) |
 Diana Lin XiaojieMrs. Dao | Mrs. Dao |
| NNikhil SinghLaundry Van Worker | Laundry Van Worker |
| IIda ConteHotel Cleaner | Hotel Cleaner |
 Christopher SommersArthur Tanner Goblin | Arthur Tanner Goblin |
| TTori WebbRosie Tanner Goblin | Rosie Tanner Goblin |
| AAnna YenTea Lady Goblin | Tea Lady Goblin |
 Chris BridgewaterTunnel Rigger Goblin | Tunnel Rigger Goblin |
| VVivienne AbitiaReceptionist Goblin | Receptionist Goblin |
 Jessica BowlesPunk Waste Management Goblin | Punk Waste Management Goblin |
