Hugh Laurie as Maurice (voice)

Emilia Clarke as Malicia (voice)

David Thewlis as Boss Man / Rat King (voice)

Himesh Patel as Keith (voice)

David Tennant as Dangerous Beans (voice)

Gemma Arterton as Peaches (voice)

Ariyon Bakare as Darktan (voice)

Joe Sugg as Sardines (voice)

Julie Atherton as Nourishing (voice)

Hugh Bonneville as The Mayor (voice)

Rob Brydon as The Pied Piper (voice)

Peter Serafinowicz as Death (voice)

Florian Westermann as Ratcatcher Billy (voice)

Toby Genkel as Ratcatcher Ron (voice)

Megan Giglia as In-Brine (voice)

Leona Liberty as Sell-By (voice)

Giles New as Blintz Vendor / Rat Handler / Chicken (voice)

Keiron Self as Rat Pit Announcer (voice)

Lynne Seymour as Rustic Old Lady / Bone Rat (voice)

Elizabeth Sankey as Bad Blintz Mother / Child / Baker (voice)

Kishan Barr as Rustic Village Boy (voice)

Jim Johnson as Brute the Cute / Billy / Jacko (voice)

Rob Wilkins as Rat Pit Dog Handler (voice)

Suzy Smithson as Bloodthirsty Rat Pit Spectator (voice)

Alex Stott as Rat Pit Spectator (voice)

Yasamin Saadat as Rat Pit Spectator (voice)

Andrew Baker as Rat Pit Gambler (voice)

Lisa Baker as Rat Pit Spectator (voice)

Julia Stuart as Encouraging Clan Rat (voice)