Michel Serrault as Gaëtan / Robert Wellson

Thierry Lhermitte as François Leroux

Gérard Jugnot as Paul Martin

Macha Méril as Jacqueline

Mathilda May as Alexandra

Didier Kaminka as René

Coluche as Georges

Maurice Baquet as Robert

Pierre Doris as Jean

Daniel Laloux as Theater director

Georges Beller as TV director

Bernard Bijaoui as Jamaican tavern boss

Pierre Tchernia as Presenter of the Césars

Muriel Dubrule as The last woman

Carole Jacquinot as Catherine

François Dyrek as Grocer

Pierre Richard as In person at the César Awards ceremony (uncredited)

Philippe Noiret as In person at the César Awards ceremony (uncredited)