Graduated in Economics and Business, in 1996 he attended the Roman School of Comics (where he currently teaches). From that moment on, the artist collaborated with Disney as a designer, screenwriter and cover artist for Mickey Mouse and other publications. In 2012 he created texts and drawings for the series "The astonishing exploits of Fantomallard, gentleman thief", which is still ongoing.
Since 2013 Gervasio has collaborated with Rovio Entertainment, creating stories for Angry Birds Comics. Since 2015 he has collaborated with IDW as a cover designer for the US editions of Disney comics. In 2017 in Portugal he received the Melhor Banda Desenhada and Melhor Desenho awards. In the XXIV edition of Romics (2018) he was awarded the prestigious Golden Romics.
Since 2019 he has been writing the Paperinik stories and in 2020 the new series "Paperbridge" debuts, a "teen drama", for which the author takes care of the texts and drawings. In 2021, his new science fiction series "The Crew of the Black Sun" sees the light, again about Mickey Mouse, and in 2023 he "stages" the theatrical comedy "Paperugantino".