TV-Series
Description
Daniel J. D'Arby is a skilled and compulsive professional gambler who appears as an antagonist in the third part of the JoJo's Bizarre Adventure series. He is an American man hired by the vampire DIO to eliminate the Joestar group during their journey in Egypt. D'Arby is a member of a group of assassins known as the Egypt 9 Glory Gods, and he possesses a supernatural ability called a Stand, which he names Osiris.

Prior to his encounter with the Joestar group, D'Arby had a history of using his gambling skills to collect the souls of his victims. His life changed when he entered a gambling match with DIO. Believing himself to be an equal, D'Arby attempted to cheat but was outmatched when DIO used his time-stopping power to swap the decks and injure D'Arby's fingers. Though DIO allowed D'Arby to claim victory in that specific game, he forced the gambler into servitude with a stern demand: he must never lose another game again.

D'Arby's entire identity is built around gambling, which is his profession, his passion, and the source of his self-worth. He lives for the thrill of the game and takes great pleasure in swindling opponents, viewing cheating as a legitimate tactic as long as it is not detected. His personal philosophy is a form of social Darwinism, where he believes that the world revolves around fakes and cheats, and those foolish enough to be deceived have no right to complain. Despite his dishonesty, he respects skill in others, as shown when he readily accepts Jotaro Kujo breaking his finger as fair punishment for being caught cheating.

D'Arby's primary motivation is his own enjoyment and pride as a gambler. While he is nominally an agent of DIO, he admits that his true reason for engaging the Joestar group is his desire for a good game rather than obedience to his master. He has a predatory instinct for tricking people into games and then goading their friends and family into trying to win back their souls, thereby increasing his winnings. His collected souls are meticulously cataloged and kept in a deep, unconscious sleep, stored as poker chips.

In the story, D'Arby encounters the protagonists in a cafe in Cairo. He claims to know the location of DIO's mansion but will only share the information if they can win it from him in a game. He first tricks Jean Pierre Polnareff into a simple bet involving a cat, which is actually D'Arby's pet, allowing him to easily win and claim Polnareff's soul with Osiris. Next, Joseph Joestar attempts a complex coin and wine glass game, but D'Arby proves to be a superior cheater by secretly using a piece of chocolate to tilt the glass and wins again.

With his friends' souls at stake, Jotaro Kujo challenges D'Arby to a poker game. Jotaro thwarts the gambler's attempts to cheat by breaking his finger, forcing them to rely on a neutral dealer. However, D'Arby reveals that everyone in the cafe is his accomplice. A tense psychological battle ensues where Jotaro bluffs by maintaining an unshakeable demeanor, using his Stand's super-speed to perform feats that appear impossible, and raising the stakes by betting the souls of his remaining friends and even his mother. D'Arby is ultimately overcome not by a superior hand, but by his own fear of losing and the consequences of betraying DIO. He mentally collapses and admits defeat in his heart, which causes Osiris to release all the souls he had collected, and D'Arby is left in a state of hysteria and madness.

D'Arby's key relationship is with his master, DIO, whom he fears profoundly. This fear is the weapon Jotaro uses to defeat him. He also has a younger brother, Terence T. D'Arby, who serves as another of DIO's assassins and has a similar soul-collecting Stand. The relationship between the brothers is known to be strained, partially stemming from an incident where Daniel flirted with his teenage brother's girlfriend. D'Arby's fate by the end of his arc is one of mental breakdown, rendering him unable to serve as a further threat.

The character does not undergo a significant development or change in his personality or worldview. His backstory establishes him as a successful, arrogant, and ruthless gambler, and he remains so throughout his confrontation with the heroes. His defeat is not an arc of redemption or growth but a catastrophic failure that shatters his confidence and sanity, demonstrating the limits of his bravado when faced with a player whose will is stronger than his own.

D'Arby's notable abilities are centered on his Stand, Osiris. The Stand itself has very low combat stats, as its function is purely for collection. Osiris allows D'Arby to extract a person's soul and compress it into a poker chip, but only under a specific condition: the victim must admit defeat in their heart, either by saying so or simply by losing their will to compete. The game in which the wager takes place can be any form of bet, not necessarily a traditional card game. Beyond his supernatural power, D'Arby is a master of sleight of hand and deception. His sense of touch is so precise that he can identify the page number of a book or the value of a card by feel alone. These skills, combined with a complete lack of ethical restraint, make him a dangerous psychological opponent, even before his Stand is brought into play.
Cast