Massimo Bonfatti studied at the art institute of Modena. He started out assisting Silver on the first 'Cattivik' story and cooperating with Roberto Ghiddi at Granata Press (both in 1978). From the early 1980s, Bonfatti worked for CartonCine Animazioni, Totò, Clod, Autospint and Il Guerin Sportivo. In 1986, he cooperated on the French magazine Pif Gadget. He started working with Silver again in 1988, assisting on 'Lupo Alberto' and 'Cattivik'. He created the character of 'Leo Pulp' in cooperation with Claudio Nizzi at Bonelli in 2000.