Cartaphilus

Cartaphilus is the main antagonist of the Great Stand War Arc and the boss of the Yakuza.

Personality
Cartaphilus is an incredibly mysterious man. No one has ever been able to gather much information on him. Being the wealthy person that he is, Cartaphilus is very proud, boasting a lot about his fortunes very often. He is extremely arrogant, and possesses a lot of confidence in himself. Despite being a Yakuza boss, he is not outright evil. He values his subordinates, always taking the best course of action for their safety, and cares even more for his Executives.

Stand
Cartaphilus possesses the Stand, Loki.

Not much is known about his Stand, but so far from what we've seen, Cartaphilus can grant it sentience on his own accord.