Stéphane Duval did his first comics work for the Breton fanzine Atchoum in 1988 and 1989. He met the scenarist Pierre Dubois in a bar, and together they created 'Les Lutins' at Delcourt. In 1998, Duval and Dubois began their second project, 'Red Caps'. Duval began a cooperation with Dieter in 1999, which resulted in the series 'Janet Jones'. In 2002, he began 'Chevalier Malheur' with scripts by Pascal Bertho.