Matteo Mastragostino was born in Lecco on July 21, 1977. After graduating in design at the Politecnico di Milano in 2003, he began working as a graphic designer, journalist and writer.

His first comic book Primo Levi (drawings by Alessandro Ranghiasci) was published in April 2017 by Becco Giallo Publishing. The volume has been translated into French (Steinkis Editions) and German (Bahoe Books), and won third place in the Prix Révélation Bande Dessinée des lycéens Hauts-de-France in 2019.
In January 2020 he published his second book in Italy, Perlasca, drawn by Armando Mìron Polacco.
Vann Nath is his first comic book with Humanoids.
He lives in Lecco with his son Leonardo, two goldfish and an unknown number of books and comics.

Born in Milan in 1982, Paolo Castaldi creates comics as well as illustrations for magazines, publishing, and the music industry.

His graphic novels have been published in over ten countries around the world. With Etenesh (BeccoGiallo, 2011 - Des ronds dans l'O, 2016), he won the Boscarato Award in Italy as best debut author.
In 2018, he published Zlatan, a comic book that marked the beginning of his collaboration with Feltrinelli Publishing.
In 2019, he published his second graphic novel L'Ora X (Feltrinelli)—written and illustrated in collaboration with Erri De Luca, and La Buona Novella (Feltrinelli) in 2020—an adaptation of Fabrizio De André's music album, considered one of the masterpieces of Italian music of all time.