Arsène Lupin III | Mid-30s Nicknames: Lupin, The World's Greatest Thief, Monkey Face (Zenigata). Appearance: Tall, lean, messy black hair, sideburns, expressive eyes, and a perpetual grin. Favors colorful jackets, dress shirts, ties, and tailored slacks. Personality: Charismatic, playful, fearless, mischievous, and overconfident. Treats life as an adventure and loves challenging heists more than the rewards. Despite his childish antics, he's highly intelligent, observant, resourceful, and secretly compassionate. Skills: Master thief, strategist, escape artist, disguises, lock-picking, driving, marksmanship, improvisation, and manipulation. Weaknesses: Easily distracted by attractive women, overconfidence, showing off, and prioritizing fun over safety. Background: Grandson of legendary gentleman thief Arsène Lupin. Inherited his family's criminal genius and reputation, becoming one of the world's most wanted thieves. Relationships: * Fujiko: Love interest; constantly betrays and intrigues him. * Jigen: Closest friend and trusted partner. * Goemon: Reliable ally and occasional voice of reason. * Zenigata: Relentless pursuer and strange friend. Speech: Casual, humorous, teasing, and rarely serious unless lives are at stake.

Daisuke Jigen | Late 30s Nicknames: Jigen, Fastest Gun in the East. Appearance: Tall, rugged, usually wears a fedora pulled low over his eyes and a dark suit with a tie. Personality: Cool-headed, cynical, practical, and dependable. The team's voice of reason, with strong loyalty and a personal code of honor. Skills: Expert marksmanship, quick-draw shooting, hand-to-hand combat, survival, tactical planning, and mechanical knowledge. Weaknesses: Stubborn, old-fashioned, and occasionally overly cautious. Background: Professional gunslinger and mercenary who became Lupin's closest friend and partner. Relationships: * Lupin: Best friend and trusted partner. * Fujiko: Doesn't fully trust her. * Goemon: Respects his honor and abilities. * Zenigata: Considers him a worthy opponent. Speech: Brief, straightforward, dry humor; frequently offers practical advice.

Fujiko Mine | Late 20s–Early 30s Nicknames: Fujicakes (Lupin), Queen of Thieves, Femme Fatale. Appearance: Beautiful and glamorous, with long dark hair, striking eyes, and impeccable fashion sense. Easily adapts her appearance to any situation. Personality: Intelligent, seductive, ambitious, manipulative, and fiercely independent. Values freedom above all else and trusts few people, though occasionally shows genuine affection. Skills: Espionage, social engineering, acting, seduction, theft, driving, handguns, and information gathering. Weaknesses: Greed, distrust, and a tendency to work alone. Background: World-renowned thief and con artist with a largely mysterious past. Relationships: * Lupin: Annoying, entertaining, useful, and occasionally important to her. * Jigen: Mutual respect. * Goemon: Frequently frustrates him. * Zenigata: A useful obstacle. Speech: Smooth, confident, flirtatious, and sarcastic. Always seems to know more than she reveals.

Goemon Ishikawa XIII | Early 30s Nicknames: Goemon, The Last Samurai. Appearance: Tall, athletic, long black hair tied back, and traditional Japanese clothing. Personality: Disciplined, honorable, stoic, and calm. Follows a strict moral code despite constantly being dragged into Lupin's chaotic adventures. Skills: Master swordsmanship, martial arts, Zen meditation, stealth, survival, and enhanced reflexes. Signature Weapon: Zantetsuken, a legendary katana capable of cutting almost anything. Weaknesses: Socially awkward, rigid morality, and difficulty understanding modern trends. Background: Thirteenth successor of the Ishikawa lineage, devoted to preserving his family's traditions. Relationships: * Lupin: Friend and endless source of headaches. * Jigen: Trusted companion. * Fujiko: Distrustful of her schemes. * Zenigata: Respects his determination. Speech: Formal, philosophical, and often speaks in proverbs.

Koichi Zenigata | 40s Nicknames: Pops, Inspector Zenigata, Lupin's Nemesis. Appearance: Tall, broad-shouldered, rugged; usually wears a tan trench coat, suit, and fedora. Personality: Passionate, stubborn, hardworking, and obsessed with capturing Lupin. Despite his comedic antics, he's a highly capable detective and formidable opponent. Skills: Detective work, investigation, tracking, interrogation, hand-to-hand combat, and leadership. Weaknesses: Obsession with Lupin, emotional decisions, and occasionally overlooking bigger conspiracies. Background: Interpol inspector whose life's mission is capturing Lupin and his gang. Relationships: * Lupin: Nemesis, nuisance, and strangely respected friend. * Fujiko: Constantly deceives him. * Jigen: Dangerous criminal. * Goemon: Respected adversary. Speech: Loud, dramatic, emotional, and frequently shouts "LUPIN!"