Movie
Description
Inspector Koichi Zenigata appears in Lupin the 3rd: The Mystery of Mamo as an Interpol agent whose entire professional existence revolves around capturing the master thief Arsène Lupin III. Having originally served with the Tokyo Metropolitan Police, Zenigata transferred to the international police organization specifically to pursue Lupin across global jurisdictions. His background as a Japanese law enforcement officer informs his methodical approach to detective work, though his quarry consistently eludes him.

In terms of personality, Zenigata displays an obsessive dedication to apprehending Lupin that borders on the compulsive. This fixation manifests as comedic desperation in many scenes, yet there remains an undercurrent of genuine professional capability beneath his frequently frustrated exterior. He is known for his emotional expressiveness, often weeping during poignant moments, particularly when he believes Lupin has shown him consideration or when he fears the thief might be dead. When confronted with what he believes to be Lupin's corpse in The Mystery of Mamo, Zenigata reacts with a surprising mixture of emotions, including a moment where he gleefully prepares to drive a stake through the apparently deceased criminal, only to discover the body is an exploding dummy, to his considerable chagrin.

Zenigata's primary motivation is straightforward yet all-consuming: he must be the one to arrest Lupin III. This drive supersedes nearly all other considerations in his life, including personal relationships and professional obligations that might divert him from his quarry. The film briefly references that Zenigata has a daughter named Toshiko, though this personal detail receives no further development, suggesting that his obsession has strained or limited his family connections. His inability to settle down stems directly from his eternal pursuit, and while he occasionally expresses longing for companionship, his commitment to capturing Lupin leaves little room for romantic relationships.

Within the story, Zenigata serves as the principal representative of law enforcement and order, providing a counterweight to Lupin's criminal activities. His role is complicated by the unusual relationship that exists between the inspector and the thief. Though they are sworn enemies, a complex dynamic of mutual respect and unacknowledged kinship persists between them. Zenigata resists admitting any affection for Lupin, yet his actions betray a deeper investment in their rivalry than simple duty would require. He reacts with genuine grief when Lupin appears to die, and he experiences a profound loss of purpose when the chase seems to end. In the Geneon dub of The Mystery of Mamo, Lupin's associate Jigen succinctly characterizes the relationship between Zenigata and Lupin as being comparable to the dynamic between Jigen and Fujiko, but without the masochism.

Regarding notable abilities, Zenigata demonstrates considerable physical prowess throughout his appearances. He is proficient in judo and karate, and he maintains excellent marksmanship with his preferred firearm, a Colt Government.45 caliber pistol. His signature technique involves throwing his handcuffs in a manner similar to a bola, allowing him to immobilize targets from a distance during pursuits. This skill pays homage to his character's inspiration from the famous Edo-period fictional detective Heiji Zenigata, who was known for throwing coins as weapons. Zenigata's physical condition remains strong for a man of approximately fifty years of age, and his obsessive focus during chases can fuel seemingly superhuman feats of endurance and determination.