Giorno's Stepfather
Giorno Giovanna's stepfather, Dio Brando, was a vampire who had been trying to take over the world for centuries. He was a cruel and ruthless man who would stop at nothing to achieve his goals. He had killed many people in his quest for power, and he had no qualms about using Giorno as a pawn in his schemes.
Dio was eventually defeated by Giorno's father, Jonathan Joestar, but he was not truly gone. His spirit lived on in Giorno, and it was this spirit that drove Giorno to become a gangster. Giorno wanted to use his power to help people, and he believed that the only way to do that was to become a part of the criminal underworld.
Giorno's stepfather was a complex and fascinating character. He was a villain, but he was also a victim. He had been through a lot in his life, and he had been shaped by his experiences. Dio was a product of his environment, and he was ultimately a victim of his own ambition.