Over a long association with the Franco-Belgian comics magazine Le journal de Spirou (Spirou magazine) starting in 1947, Will created, illustrated and wrote several series, including Tif et Tondu (as main artist, taking over from creator Fernand Dineur), and Isabelle. He wrote scripts for, among others, Spirou et Fantasio and Benoît Brisefer. During the period of 1958–60, Will also acted as artistic director of Spirou's rival publication Tintin magazine.
Contribution to collective Il était une fois les belges (Once Upon a Time There Were the Belgians), Le Lombard, 1980.
L'ogresse des carpartes, with Yann (story), in Les Histoires merveilleuses des oncles Paul, Vents d'Ouest, 1986.
Le jardin des désirs (The Garden of Desires), with Stephen Desberg (story), Dupuis, coll. " Aire Libre『, 1988.
La 27e lettre (The 27th Letter), with Stephen Desberg (story), Dupuis, coll. 』Aire Libre ", 1990.
L'appel de l'enfer (Appeal in Hell), with Stephen Desberg, P&T Productions, 1993.
Isabelle in the collective Brel n°2, Vents d'Ouests, 1997.
L'arbre des deux printemps (The Tree of the Two Springs), with Rudi Miel (story), Le Lombard, collective "Signé", 2000. Will could not finish the last 4 pages prior to his death.