Diavolo is a fictional character from the manga and anime series JoJo's Bizarre Adventure, specifically featured in the fifth part titled Vento Aureo. He is the main antagonist and the leader of the Passione crime organization in Italy. Diavolo possesses a Stand named King Crimson, which allows him to erase time and predict the future, making him a formidable opponent. Diavolo's character is marked by his desire for power and control, as he seeks to eliminate anyone who poses a threat to his rule. His complex personality is further explored through his alter ego, Doppio, who serves as his subordinate and represents a different aspect of his psyche.