Diavolo is a ruthless and paranoid leader, who is willing to do whatever it takes to maintain his power and protect his secrets. He is extremely paranoid about his identity and takes extreme measures to keep it secret, such as killing anyone who has seen his face. Diavolo's ultimate goal is to obtain the power of the Arrow, which can awaken powerful Stands in those who are pierced by it. He believes that with this power, he can achieve his ultimate goal of becoming invincible and ruling over