Julio Diaz è nato il 18 novembre 1958. Luogo di nascita: Manila, Filippine. È conosciuto come attore. È celebre per aver partecipato a Sakay (1993), Kristo (2017) e Bayani (1992).
He said his career unexpectedly ended right after he engaged director Joel Lamangan in a heated argument. He said the influence of director Lamangan in the showbiz prompted other movie makers from shying away in hiring his service. Lamangan, however, denied having influenced other filmmakers.