Marco began writing dialogues for Comics in 1974, creating the characters Mark Dhytle and Hud Kelly (right) for issues of Flash, with the illustrations of Rodolfo Torti.

In 1975 he moved to Lanciostory, where he wrote numerous story boards based on the illustrations of various comic artists.

In 1976 he won a newspaper contest from the Roman newspaper for “Best New Italian Comic Strip” with his strip Piero with drawings done by Fabio Petrassi.

He came in second with another strip "YETI" which was then later published by Lanciostory, The Salt Notebooks, Arrivano I Nostri (Here Comes Ours). The illustrations are by Rodolfo Torti.

In 1977 he began working as a storyboard scriptwriter for "Il Giornalino" for which he wrote numerous stories and created the adventure series, Hans and Chica, illustrated by Pino Calarco.
From 1978 to 1980 he wrote the series "Football Greats, " a comic book biography of Pelè, Schiaffino, Facchetti, Rivera, Di Stefano, Puskas, Matthews, Meazza, Sivori, Garrincha, Liedholm, Mazzola, and Beckembauer, illustrated by Bernasconi and Quinto.

In 1980 he published, Grosky Hotel, for Mondadori’s Wizard with Fabio Petrassi‘s illustrations which has a storyline inspired by American comics from the 1930s.

From 1981 to 1984 he wrote the series Jazz Greats which are comic biographies of Jazz Greats such as Charlie Parker, Benny Goodman, Louis Armstrong, Duke Ellington, Count Basie, Fats Waller, Lester Young, Sarah Vaughan, and Bix Beiderbecke, illustrated by Rodolfo Torti, Paolo Ongaro, Luciano Bernasconi, and Antonio Chiarolla. The series was published in the newspaper “Il Giorno” as well.

In 1984 he created the strip Cicco for the magazine Fotografare.

In 1985 he wrote the dialogues for the comic biographies of Marilyn Monroe and legendary Italian comic actor Totò. Both stories whose titles are taken from the actors themselves’ names were published by Il Giornalino and Comic Art, and were illustrated by Gianni De Luca.