Having left school early to help support his family, he worked in a variety of jobs in his youth, including as an employee of an insurance company, but at the same time began writing short stories and poems for various Italian magazines.

He went on to create a series of comic books and characters which included Gim Toro in 1946 (his first major success), Tony Falco in 1948, Geky Dor in 1949, Kinowa in 1950 and Il Piccolo Ranger in 1958.

[1][2][3] In the mid-1950s Lavezzolo began working for the newspaper Il Giorno on the recommendation of Cino Del Duca having previously worked on Del Duca's magazines Il Monello and Intrepido, both of which were aimed at children and teenagers.

In 1957 he became the editor of the paper's weekly young people's supplement Il Giorno dei Ragazzi and remained in that post until 1966.

One of the city's newest areas (building began in 2005), Torrino Mezzocammino has streets, piazzas and even schools named for the characters, writers, and artists of Italian comics.