Giancarlo Olivares took courses in comics by the Argentine artist Ruben Sosa, following his technical studies. From 1991, he cooperated on the collective albums 'Profondo Rosso' and 'Full Moon Project' with other young artists from the Brescia area. Olivares subsequently made some short stories with scriptwriter Federico Memola for Intrepido, before he became one of the artists of 'Lazarus Ledd' and 'Hammer' stories at Star Comics. He also became the cover artist of these series. Afterwards, he joined the art staffs of the Bonelli series 'Nathan Never', 'Legs Weaver' and 'Jonathan Steele'. He has worked with the French scriptwriter Jean-François di Giorgio on the historical series 'L'Or des Fous' at Soleil Productions since 2012.