Dany Boon

~ as ~

Valentin Duquesne, aka Valentin D.

Line Renaud

~ as ~

Suzanne Duquesne, Valentin's mother

Laurence Arné

~ as ~

Constance Brandt, wife of Valentin

Valérie Bonneton

~ as ~

Louloute, Valentin's ex-fiancée

Guy Lecluyse

~ as ~

Gustave, Valentin's brother

François Berléand

~ as ~

Alexander, Constance's father

Pierre Richard

~ as ~

Joseph Duquesne, Valentine's father

Juliane Lepoureau

~ as ~

Britney

Stéphane Pezerat

~ as ~

Speech therapist

Aladin Reibel

~ as ~

Professor Rosenberg