• 
  Stéphane Aubier

  regizor
• 
  Vincent Patar

  regizor
• 
  Benjamin Renner

  regizor

• 
  Anne-Marie Loop

  La Grise
• 
  Lambert Wilson

  Ernest
• 
  Pauline Brunner

  Celestine
• 
  Paul Giamatti

  Rat Judge (voce)
• 
  Mackenzie Foy

  Celestine (voce)

• 
  Lauren Bacall

  The Grey One (voice)
• 
  William H. Macy

  Head Dentist (voice)
• 
  Forest Whitaker

  Ernest
• 
  Megan Mullally

  Lucienne (voice)
• 
  Dominique Maurin

  Chef de Clinique (voice) (as Dominique Collignon)
• 
  Patrice Melennec

  Georges (voice)
• 
  Nick Offerman

  George (voice)

• 
  Jeffrey Wright

  Grizzly Judge (voice)
• 
  Brigitte Virtudes

  Lucienne (voice)
• 
  Léonard Louf

  Léon (voice)

• 
  Didier Brunner

  producător
• 
  Henri Magalon

  producător
• 
  Vincent Tavier

  producător