Daisuke Jigen operates as a professional gunman and primary partner to master thief Arsène Lupin III. His Bronx-born origins led to early involvement with New York's mob before he shifted to Europe's Italian mafia. There, an affair with his boss's wife Cicciolina culminated in her accidentally shooting her husband during a confrontation. Jigen claimed responsibility for the killing to shield Cicciolina, fleeing mafia retribution and adopting the murder weapon—his signature Smith & Wesson Model 19 revolver—as his own. Years later, Cicciolina hired thief Fujiko Mine to steal Jigen’s revolver, provoking a church showdown where Cicciolina aimed his unloaded Magnum at him. Jigen fatally shot her, only to realize she sought assisted suicide. This trauma pushed him to renounce killing as a profession in favor of theft. His enduring partnership with Lupin began with their inaugural bank heist. Jigen wields near-superhuman firearms expertise: a 0.3-second quick-draw, pinpoint accuracy to intercept missiles or bullets mid-flight, and tactical trick shots using environmental objects. Though favoring his Model 19, he masters revolvers, sniper rifles, machine guns, and anti-tank weaponry. He also excels in hand-to-hand combat, vehicle operation, and disguise. Personality traits include a gruff, cynical exterior masking dry wit and fierce loyalty to Lupin. He distrusts women due to past trauma and clashes with Lupin over recklessness or Fujiko’s schemes. While avoiding killing women and children, he eliminates armed threats without hesitation. Recurring habits encompass chain-smoking, avoiding dentists despite chronic toothaches, and enjoying spaghetti westerns, American food, boxing, and alcohol. His iconic look features a broad-brimmed fedora shadowing his eyes, a chin curtain beard, and dark suits with muted shirts and ties. The fedora and revolver remain his prized possessions, seldom removed except during mourning or formal events. In *Daisuke Jigen’s Gravestone*, he confronts assassin Yael Okuzaki after surviving a headshot through tactical deception. Jigen ends Okuzaki’s career by shattering his firing arm but spares his life. The 2023 live-action film *Jigen Daisuke* follows his journey to Japan to repair his malfunctioning revolver. He bonds protectively with mute girl Oto—traumatized by a drug cartel—and confronts cartel leader Kawashima, who uses Oto as a human shield, revealing unexpected paternal instincts. The *Lupin Zero* ONA depicts his childhood criminal tutelage under his father, mastering firearms early and delivering illicit goods before meeting Lupin. Their partnership solidified after rescuing singer Yoko from kidnappers.