Seron started in the comics industry as an assistant designer to Dino Attanasio and Mittéï under the pseudonym Foal, working on series such as André Franquin's Modeste et Pompon.Launching his own work, the series Les Petits Hommes (The Little Men), initially in collaboration with journalist Albert Despréchins, began serial publication in Spirou magazine on 7 September 1967, a run continuing into 2004. Revisiting the pseudonym Foal, he created the series La Famille Foal which was published in Pif gadget from 1973 to 1976, later published in albums under the name La Famille Martin.His series Aurore et Ulysse (alternately known as Les Centaures) started serial publication on 23 June 1977, also in Spirou.
