TV Special
Description
Koichi Zenigata stands as the primary antagonist and foil to Lupin III, conceived by Monkey Punch to embody a "human Tom and Jerry" dynamic, fueling their arch-rivalry. His origins connect to the fictional detective Zenigata Heiji; early versions identified him as Heiji Zenigata VII, though later portrayals deemphasized this bloodline in favor of the standalone name Koichi Zenigata. The character also draws inspiration from Maurice Leblanc's Inspector Ganimard, rival to the original Arsène Lupin.

Zenigata appears as a middle-aged Japanese man of average height with a muscular build, dark hair, and a signature cleft chin. His look varies across adaptations, frequently marked by a trench coat and fedora, with color schemes changing between series parts—orange in Part 1, camel in Part 2, and red in Part 4. His physique closely mirrors Lupin's, enabling frequent disguise swaps.

His personality centers on an obsessive dedication to capturing Lupin, defining his life's purpose. This drive pushes him to extremes, like resigning from Interpol to chase Lupin as a civilian or retiring temporarily when believing Lupin dead. Despite this relentless focus, he exhibits complexity: he resists bribery, upholds a strong sense of justice, and displays unexpected vulnerability, often crying when Lupin shows him kindness or faces mortal danger. His impulsiveness and single-mindedness frequently result in comedic chaos, yet he earns respect within Interpol for collateral arrests made during his pursuits.

Zenigata's relationship with Lupin balances antagonism with mutual respect. While viewing Lupin as his rightful captive, he forms temporary truces against greater threats, such as exposing Count Cagliostro's counterfeiting or navigating perilous situations like the catacombs in *The Castle of Cagliostro*. Lupin affectionately calls him "Pops," a nickname Zenigata tolerates or occasionally embraces. This dynamic shifts across media; the manga depicts a more ruthless and competitive Zenigata, while anime adaptations often emphasize a begrudging camaraderie. His devotion extends to protecting Lupin from external threats, insisting only he can make the arrest.

He possesses notable physical and investigative skills, demonstrating proficiency in judo, karate, and marksmanship, typically wielding a Colt M1911 pistol. His signature technique involves throwing handcuffs with bola-like precision. Subconscious reflexes enable extraordinary feats during chases, overcoming multiple attackers or obstacles when fixated on Lupin. Despite occasional bumbling portrayals, he remains a competent detective capable of deducing Lupin's plans and security vulnerabilities.

Personal habits include disordered living spaces, binge eating during stress, and occasional heavy drinking. He shows no permanent romantic attachments, attributing this to his all-consuming chase. While early iterations referenced a daughter, this was later omitted, with Zenigata stating he has no family. Patriotism surfaces in moments like honoring a deceased Japanese spy in *Cagliostro*, where he also wields a jutte, a nod to his ancestral link to Zenigata Heiji.

In *Prison of the Past*, Zenigata participates in the pursuit of Lupin within the Kingdom of Dorrente. His broader development across the franchise evolves from Part 1's corrupt and violent portrayal to later series' more balanced or comedic interpretations, consistently maintaining his core identity as Lupin's eternal rival.