TV Special
Description
Inspector Koichi Zenigata is a Japanese police officer affiliated with Interpol, originally with the Tokyo Metropolitan Police Department before transferring to pursue international criminals. He is a middle-aged man of average height with dark hair and a signature cleft chin, typically wearing a trench coat over a suit and fedora, with the color scheme varying across series installments.

Early manga and Part 1 of the anime portrayed him as ruthless, opportunistic, and violent, exhibiting corruption and obsessive tendencies in his pursuit of Lupin III. His character evolved significantly by Part 1, Episode 14, becoming more affable, well-meaning, and occasionally bumbling, while retaining his core dedication to justice. Across the franchise, he balances serious police competence with overzealousness: "The Woman Called Fujiko Mine" and related spinoffs depict a sterner, more ambitious version, while the "Red and Pink" series and most TV specials emphasize his goofier, boisterous side. Parts 4 and 5 blend these traits, showing a more balanced or serious iteration that retains his hotheadedness.

Zenigata's primary motivation is his lifelong obsession with capturing Lupin III, whom he considers his personal nemesis. This fixation manifests extremely: he experiences insomnia until Lupin's name is mentioned, insists on exhaustive security measures for Lupin's imprisonment, and isolates himself on an island to guard Lupin's cell. Despite this rivalry, an unwritten rule exists where neither attempts to kill the other. Lupin occasionally aids Zenigata against greater threats, and Zenigata mourns Lupin intensely when believing him dead, even temporarily retiring as a monk in "The Fuma Conspiracy" OVA. He often states only he should capture Lupin, displaying protectiveness over their dynamic.

He possesses a strong sense of honor and justice, rejecting bribes and showing outrage at corruption within Interpol, which he frequently criticizes for budget constraints and unethical actions. His impulsiveness and insubordination toward superiors stem from this moral stance. While respected by colleagues, his Lupin-focused methods strain relationships with bosses.

Emotionally, Zenigata is sensitive and prone to crying, particularly when Lupin shows him kindness or faces mortal danger. He channels stress through binge eating like ramen or hamburgers or heavy drinking during depressive episodes, as seen in "Tokyo Crisis." His transient lifestyle results in perpetually messy living and workspaces.

Physically, Zenigata is highly capable, proficient in judo, karate, and jitte combat, and adept at subduing multiple attackers. His signature skill is near-superhuman accuracy with thrown handcuffs. His obsession with Lupin enables extraordinary subconscious feats, such as waking from a coma upon hearing Lupin's name or performing acrobatic pursuits without conscious effort.

In "The Last Job," Zenigata sustains a near-fatal injury during a chaotic heist involving Lupin and the supervillain Morgana, who steals a Buddha statuette linked to the Fuma Clan's Fujin power. This mortality confrontation underscores his vulnerability but does not alter his fundamental dedication to pursuing Lupin, reflecting his resilience.

His character occasionally hints at personal sacrifices, including lacking a family due to his relentless pursuits, though earlier media inconsistently referenced a daughter. Live-action portrayals, like the 2017 series "Zenigata Keibu," depict him investigating standalone cases in Japan but diverge tonally from his anime/manga persona.