Denis-Pierre was born in France. Very early he geared his work towards children and YA. During a book show, Filippi asked Tiburce Oger, author of Gorn, to read one of his tale. Oger et Filippi then created Orull, published by Delcourt. Later, Filippi joined Boiscommun on the Book of Jack then the Book of Sam, 2 stories from the trilogy Halloween Tales. Since then, Denis-Pierre has worked on John Lord, Muse (with Terry Dodson), Marshals and Gregory & The Gargoyles, all published by Humanoids.
An early art enthusiast an avid comic book fan, Tirso dedicated himself to the craft of drawing and won a comic book talent contest in 1993,at the young age of fourteen. In the early 2000s, he studied and eventually came to work in the fields of advertising and public relations. He became the artistic director of the successful Spanish advertising agency Contrepoint, where he collaborated on projects for Jeep, Mercedes-Benz, and Chrysler, among many others. A few years later, Tirso decided to venture back into the world of graphic novels where he ascended rapidly, working alongside authors such as Wander Antunes, and winning a prestigious best book award at the festival de Moulins along the way.