Daisuke Jigen is a professional thief and master marksman, famously the loyal partner to master thief Arsène Lupin III. His background varies across media. Some sources depict him born in the Bronx, New York, joining the New York mob young and honing his exceptional firearms skill under mentors like Joe of Spades and later the mercenary Gallanco in South America. He eventually moved to Europe, joining the Italian mafia and forming a close relationship with Cicciolina, his boss's wife. When the boss discovered them and tried to kill Jigen, Cicciolina intervened, accidentally killing her husband. Jigen took the blame, claimed the boss's Smith & Wesson Model 19 revolver as his signature weapon and prized possession, and fled, later working briefly for the Chinese mafia. Orchestrated by Fujiko Mine, a later encounter saw Cicciolina confront Jigen in a church. He shot her, only to find her gun unloaded; she had sought his help to commit suicide, deepening his disillusionment with killing and pushing him towards theft. His connection to Lupin III also has alternative depictions. Early manga portrayed him as a cynical hitman potentially willing to betray Lupin for enough money, but their relationship evolved into profound mutual trust and partnership. The prequel *Lupin Zero* shows a younger Jigen active in 1960s Japan. Already skilled with guns due to his criminal father involving him in underworld activities like gun-running, he encountered a young Lupin III at school. Despite initial reluctance, shared adventures, such as rescuing a singer named Yoko, forged a bond leading Jigen to join Lupin's schemes, establishing a dynamic mirroring their future partnership. Jigen serves as Lupin III's primary aide-de-camp and sharpshooter. He possesses extraordinary speed and accuracy, capable of a 0.3-second quick-draw and feats like shooting skeet with a handgun, detonating missiles by targeting warheads, and deflecting bullets mid-flight. Proficient with many firearms, his preferred carry remains the Smith & Wesson Model 19 revolver, valued for its stopping power and reliability, typically carried tucked into the back of his pants or in a fabric holster. He feels deeply dependent on his weapon, incomplete without it, and instinctively mimics aiming gestures even when disarmed. His personality blends pragmatism, cynicism, and a gruff exterior with underlying loyalty and an ironic sense of humor. He frequently acts as the voice of reason to Lupin's impulsiveness, yet ultimately participates in even the wildest schemes. He has a quick temper, responding violently to insults or perceived slights, even against colleagues like Lupin or Goemon Ishikawa XIII. He is the least hesitant in the group to use lethal force against direct threats, though he considers killing women and children taboo. Distrust of women stems from numerous failed romantic relationships, often ending in betrayal or death, fueling particular wariness of Fujiko Mine and irritation when Lupin cooperates with her. Personal habits include heavy smoking (reportedly around 60 bent cigarettes per day), a preference for American food, scotch, bourbon, and beer, and a noted resistance to intoxication. He enjoys pastimes like target practice, poker, boxing matches, billiards, fishing, and spaghetti westerns, but generally prefers staying close to home. A recurring trait is his intense fear of dentists, sometimes leading to dental issues that temporarily impair his abilities. Physically, Jigen is defined by his ever-present broad-brimmed fedora, worn low to obscure his eyes, and an unkempt chin curtain beard. He typically wears dark-colored business suits with light-colored dress shirts and black ties, though specific colors vary across series and films. His hat is his most treasured possession besides his firearms, rarely removed except during mourning or formal occasions. He is also adept at disguises, piloting various vehicles, and hand-to-hand combat, capable of incapacitating opponents with single blows.