Melo wrote The Adventures of Dog Mendon a & Pizzaboy, a series of three graphic novels published by Tinta-da-China and Dark Horse Comics. The books feature forewords from legendary filmmakers John Landis, George A. Romero and Tobe Hooper. He frequently works with Argentinian artists Juan Cavia and Santiago Villa. In 2012 he was invited to write a story for the Eisner winning anthology Dark Horse Presents, also featuring works by Frank Miller and Mike Mignola. He has won Best Script (2011) and Best Comic Book (2012) at Amadora BD with these books.