Élie Semoun as Gustave Latouche / Ghislaine Latouche

Ary Abittan as Flartf

Émilie Caen as Ghislaine Rateau

Frédérique Bel as Adeline Gratin

Loïc Legendre as Hervé Ducobu

Gabin Tomasino as Ducobu

Adèle Barazzuol as Léonie Gratin

Jeanne Michel as Karine

Marguerite Schumacker as Denise

François Levantal as Directeur de Saint Potache

Gérard Jugnot as Monsieur Kitrich

Claude Musungayi as Pector

Maxime Clausse as Benoit Petipet

Sarah Boon as Sarah

Éric De Staercke as Le propriétaire

Antoine Schoumsky as Neness (Voix)

Vincent Taloche as Professeur d'une ancienne école

Franck Dubosc as Serveur

Guillaume Kriescher as Serveur

Solal Grunberger as Gustave Latouche (Enfant)

Raphaël Lamaassab as Flartf (Enfant)

Lucile Peters as Margaret

Jack Zenner as Antoine

Anaïs Bawin as Anaïs

Nicolas Grand Duc as Le boucher

Frédéric Hazan as Le serveur