 Hugh LaurieMaurice (voice) | Maurice (voice) |
 Emilia ClarkeMalicia (voice) | Malicia (voice) |
 David ThewlisBoss Man / Rat King (voice) | Boss Man / Rat King (voice) |
 Himesh PatelKeith (voice) | Keith (voice) |
 David TennantDangerous Beans (voice) | Dangerous Beans (voice) |
 Gemma ArtertonPeaches (voice) | Peaches (voice) |
 Ariyon BakareDarktan (voice) | Darktan (voice) |
 Joe SuggSardines (voice) | Sardines (voice) |
 Julie AthertonNourishing (voice) | Nourishing (voice) |
 Hugh BonnevilleThe Mayor (voice) | The Mayor (voice) |
 Rob BrydonThe Pied Piper (voice) | The Pied Piper (voice) |
 Peter SerafinowiczDeath (voice) | Death (voice) |
| FFlorian WestermannRatcatcher Billy (voice) | Ratcatcher Billy (voice) |
 Toby GenkelRatcatcher Ron (voice) | Ratcatcher Ron (voice) |
| MMegan GigliaIn-Brine (voice) | In-Brine (voice) |
| LLeona LibertySell-By (voice) | Sell-By (voice) |
 Giles NewBlintz Vendor / Rat Handler / Chicken (voice) | Blintz Vendor / Rat Handler / Chicken (voice) |
 Keiron SelfRat Pit Announcer (voice) | Rat Pit Announcer (voice) |
| LLynne SeymourRustic Old Lady / Bone Rat (voice) | Rustic Old Lady / Bone Rat (voice) |
 Elizabeth SankeyBad Blintz Mother / Child / Baker (voice) | Bad Blintz Mother / Child / Baker (voice) |
| KKishan BarrRustic Village Boy (voice) | Rustic Village Boy (voice) |
| JJim JohnsonBrute the Cute / Billy / Jacko (voice) | Brute the Cute / Billy / Jacko (voice) |
| RRob WilkinsRat Pit Dog Handler (voice) | Rat Pit Dog Handler (voice) |
| SSuzy SmithsonBloodthirsty Rat Pit Spectator (voice) | Bloodthirsty Rat Pit Spectator (voice) |
| AAlex StottRat Pit Spectator (voice) | Rat Pit Spectator (voice) |
| YYasamin SaadatRat Pit Spectator (voice) | Rat Pit Spectator (voice) |
| AAndrew BakerRat Pit Gambler (voice) | Rat Pit Gambler (voice) |
| LLisa BakerRat Pit Spectator (voice) | Rat Pit Spectator (voice) |
| JJulia StuartEncouraging Clan Rat (voice) | Encouraging Clan Rat (voice) |
