Born at Muggia, near Trieste, he studied at the Academy of Fine Arts in Genoa under the scholarship of Lodovico Caraventa.

He attended the "Free School of Figure" directed by Nino Perizi at the Revoltella Museum in Trieste.

From 1964 on, he held several exhibits, both exclusive ones and not, showing up his ability with various materials, including different types of wood and, in particular, sandstone and marble.

In 2004, Villi Bossi sculpted a large "Venetian Lyon" for the Assicurazioni Generali, which is also the logo of this major insurance company, placed in the neighbourhood of Padua, starting from a large block of stone, sized 8 cubic meters.

His work was reviewed by Giulio Montenero, Enzo Santese, Marianna Accerboni and Boris Petkovski, among others.