Daisuke Jigen functions as the primary marksman and unwavering partner to Lupin III. His design draws inspiration from American gangsters, notably James Coburn's role in "The Magnificent Seven," with his name originating from the Japanese word for "dimension," reflecting creator Monkey Punch's interest in the term. His origins vary across media. Some manga depict Jigen beginning as a cynical hitman hired to kill Lupin, their mutual respect forging an eventual partnership. Conversely, anime like "Lupin Zero" show their childhood friendship in 1960s Japan, where a young Jigen displayed advanced firearms skill and engaged in underground crime before partnering with Lupin. Alternate backstories place him raised within New York's criminal underworld before relocating to Japan and adopting his identity. His criminal past includes work with American and Italian mafia groups, featuring a significant relationship with mob boss's wife Cicciolina that resulted in him taking blame for a killing and acquiring his signature Smith & Wesson Model 19 revolver. Jigen possesses exceptional firearms expertise, achieving a 0.3-second quick draw with superhuman accuracy. This allows him to shoot skeet with handguns, intercept missiles by targeting warheads, and deflect bullets mid-flight. He employs trick shots using the environment, like dislodging objects to non-lethally incapacitate opponents. Proficient with revolvers, machine guns, sniper rifles, and anti-tank rifles, he demonstrates tactical ingenuity during operations. Beyond marksmanship, he exhibits skills in driving, piloting, hand-to-hand combat, and disguise. Personality-wise, Jigen maintains a gruff, cynical exterior and a quick temper, often reacting violently to insults from allies and enemies. Despite this, he displays ironic humor and pragmatic professionalism during heists. His loyalty to Lupin remains absolute, though he frequently voices irritation over Lupin's impulsiveness and attraction to women, showing particular distrust toward Fujiko Mine's manipulations. Personal hobbies include smoking cigarettes (preferring Pall Mall or Marlboro brands), drinking Scotch or bourbon, target practice, and watching Spaghetti Westerns. His backstory involves failed romantic relationships marked by betrayal or tragedy, contributing to his distrustful nature. Jigen's consistent visual design features a chin curtain beard and a broad-brimmed fedora that typically obscures his eyes, reportedly aiding his aiming and maintaining an enigmatic appearance. His wardrobe predominantly consists of dark-colored suits: black suit and fedora in early iterations, dark gray in later adaptations, with occasional deviations like a dark greenish-gray ensemble in "The Legend of the Gold of Babylon" or a blue-green blazer in "Daisuke Jigen's Gravestone." "The Woman Called Fujiko Mine" explores Jigen's past as a mercenary and mob enforcer before meeting Lupin, depicting formative experiences shaping his moral ambiguity and eventual shift toward theft. Television episodes across Lupin III parts highlight his character through narratives involving former associates or romantic interests, such as a Part 3 two-part story connecting a stolen ring to his history, and a Part 5 episode featuring a confrontation with a mercenary from his past. Within "Lupin III: Elusiveness of the Fog," Jigen is transported 500 years into the past alongside Lupin, Goemon, and Inspector Zenigata due to antagonist Kyosuke Mamo's manipulation of time travel technology. The narrative requires Jigen to adapt his modern firearms expertise to a feudal Japanese setting while maintaining his characteristic dynamic with Lupin through snappy dialogue exchanges. The special introduces Ofumi, an ancestor of Fujiko Mine, creating interpersonal dynamics where Jigen's protective instincts emerge, particularly regarding potential disruptions to Fujiko's existence.