Anne-Marie Loop

as La Grise (voice)

Lambert Wilson

as Ernest (voice)

Pauline Brunner

as Célestine (voice)

Patrice Melennec

as Georges (voice)

Brigitte Virtudes

as Lucienne (voice)

Léonard Louf

as Léon (voice)

Dominique Maurin

as Chef de Clinique (voice)

Féodor Atkine

as Juge Grizzly (voice)

Vincent Grass

as Chef de la police des Ours (voice)

Patrice Dozier

as Chef de la police des Rats (voice)

Jacques Ciron

as Monsieur Rançonnet (voice)

Garance Pauwels

as Célestine (enfant) (voice)

Pierre Baton

as Juge Rat (voice)

Ethan Louis Samuels DiSalvio

as Martin (voice)

Spike Spencer

as Various Characters (voice)

Hunter Maki

as Additional Voices (voice)

Maxime Bailleul

as Additional Voices (voice)

Kémil Belhadj

as Additional Voices (voice)

Yanis Belhadj

as Additional Voices (voice)

José António Barbosa de Oiveira

as Additional Voices (voice)

Swann Bey

as Additional Voices (voice)

Simon Brunner

as Additional Voices (voice)

Samuel Cahu

as Additional Voices (voice)

Adeline Chetail

as Additional Voices (voice)

Thierry d'Armor

as Additional Voices (voice)

Michel Elias

as Additional Voices (voice)

Jennifer Fauveau

as Additional Voices (voice)

Ambre Foubert

as Additional Voices (voice)

Nathalie Homs

as Additional Voices (voice)

Warren Homs

as Additional Voices (voice)

Pascale Jacquemont

as Additional Voices (voice)

Gwenaelle Jegou

as Additional Voices (voice)

Sofiane Larcher-Guessoum

as Additional Voices (voice)

Emmanuel LeMire

as Additional Voices (voice)

Ornella Louf

as Additional Voices (voice)

Perrette Pradier

as Head Nurse Mouse (voice)

Yann Le Madic

as Avocat d'Ernest (voice)