The self-taught artist Marcello Quintanilha began his career at several publishers in São Paul and Rio, using the pseudonym Marcello Gaù, from 1988. Two years later, he began a career in the animation and advertising fields. He then became an illustrator for the press, cooperating on several Brazilian political and cultural magazines and newspapers.
His work also appeared in the American Heavy Metal magazine, as well as several book and cd covers. Settled in Spain, he began his comics series 'Sept Balles pour Oxford' with scripts by Montecarlo and Jorge Zentner in 2003.