Dany Boon

Valentin Duquesne, aka Valentin D.

Line Renaud

Suzanne Duquesne, Valentin's mother

Laurence Arné

Constance Brandt, wife of Valentin

Valérie Bonneton

Louloute, Valentin's ex-fiancée

Guy Lecluyse

Gustave, Valentin's brother

François Berléand

Alexander, Constance's father

Pierre Richard

Joseph Duquesne, Valentine's father

Juliane Lepoureau

Britney

Stéphane Pezerat

Speech therapist

Aladin Reibel

Professor Rosenberg