Born in Merano, after his Liceo Classico degree Trevisan studied agricultural science at the University of Padua.
[1] An autodidact,[2] he began his career collaborating with the graphic studio of Roy D'Amy [it]; his first work was for the series Cherry Brandy racconta...[1] In the 1960s, Trevisan moved to Este and started collaborating with several major comic publications, notably Corriere dei Piccoli, often partnering with Mino Milani.
[3] He also collaborated with international publishers, including Fleetway Publications and Éditions Lug.
[1] In the 1970s he collaborated with Dardo [it], for which he created the series Medium with Romano Garofalo.
[1] In the late 1970s Montanari entered Sergio Bonelli Editore, collaborating with the series Storia del West, Ken Parker and Julia.