La Métamorphose des cloportes

Lino VenturaAlphonse Maréchal aka 'Le Malin'

Charles AznavourEdmond Clancul aka 'Le Naïf'

Irina DemickCatherine Verdier, manager of an art gallery

Maurice BiraudArthur aka 'Le Mou'

Georges GéretJoseph Rouquemoute aka 'Le Rouquin'

Pierre BrasseurDemuldère aka 'Tonton le Brocanteur', receiver

Françoise RosayGertrude, supplies specialist in the mafia

Annie FratelliniLéone Rouqemoute, prostitute

Norman BartGallery visitor

Georges BlanessOmar

Dorothée BlanckGirl at the hotel particulier

Marcel CharveyGallery visitor