Inspector Koichi Zenigata, a Japanese man in his middle years, stands at 181 cm with a lean, athletic build, weighing 73 kg. His sharp black eyes and neatly kept black hair complement his professional attire, typically a tailored suit that underscores his law enforcement role. Drawing lineage from the legendary Heiji Zenigata, a crime fighter famed for his coin-throwing prowess, this inspector employs a signature handcuff-throwing technique to subdue targets, blending tradition with tactical ingenuity.

A tenacious officer, Zenigata began his career with the Tokyo Metropolitan Police before his relentless dedication to capturing Lupin III propelled him to Interpol, granting him international jurisdiction. His obsession with the pursuit has eroded personal bonds, particularly with his wife and daughter, as his familial responsibilities fade behind his professional fervor.

Trained in judo and karate, Zenigata dominates in close combat and firearms proficiency, favoring a Colt M1911 pistol. His physical agility and unyielding resolve make him a persistent threat to Lupin’s schemes. Though primarily fixated on arresting the master thief, Zenigata occasionally forms uneasy alliances with him to thwart larger criminal threats, revealing a grudging respect that complicates their rivalry. This duality highlights his rigid adherence to justice and duty, cementing his role as both Lupin’s foil and an unwavering symbol of lawful resolve.