Hirohiko Araki
is a fictional character appearing in "JoJo's Bizarre Adventure", a Japanese manga series written and illustrated by Hirohiko Araki. He is the main antagonist of the series' first part, "Phantom Blood", appearing in the debut chapter , published in "Weekly Shōnen Jump" in 1987. He later returns (known simply as DIO) as the main antagonist of the series' third part, "Stardust Crusaders" - now a powerful vampire and user of the time-stopping supernatural ability named The World.