Movie
Description
Hattori serves as the design chief of the Mitsubishi Aircraft Company, where the protagonist Jiro Horikoshi begins his professional career. In this capacity, he is a senior figure within the organization, holding a position above Jiro’s immediate supervisor, Mr. Kurokawa. His character is based on a real historical person, Joji Hattori, who was a senior engineer in Mitsubishi's aircraft design division in Nagoya.

Within the narrative of the film, Hattori is a supportive presence who champions Jiro’s talent and innovative ideas. He is first seen on Jiro’s first day at the company, observing the young engineer’s drafts alongside Mr. Kurokawa. His role is that of an encouraging leader who recognizes potential and is willing to back unconventional thinking. This is consistent with the real-life Hattori, who supported the radical reverse-gullwing wing design proposed by the young Jiro Horikoshi, a decision that ultimately led to the successful A5M fighter.

Hattori’s personality is portrayed as warm and possessing a sense of humor. In one scene, he and Mr. Kurokawa share a laugh in a taxi with Jiro when the young man expresses his eagerness to return home to read a letter from his fiancée, Naoko, showing a paternal, kindly amusement at Jiro's youthful romance. His demeanor is not that of a stern, distant executive but rather an engaged and personable leader. He is also present to listen to Jiro’s technical presentation on making planes lighter through the use of countersunk rivets, demonstrating his continued, hands-on interest in the engineering advancements of his team.

Hattori’s primary motivation is the advancement of aircraft design. As the design chief, he is dedicated to leading his department toward creating superior and innovative airplanes. His key relationships are professional ones with Jiro Horikoshi, the brilliant young engineer, and Kiro Honjo, as well as with Mr. Kurokawa. He serves as a mentor figure who fosters a productive and supportive engineering environment. Although a minor character with limited screen time, his role is crucial as a representative of the corporate leadership that enables Jiro’s career and successes. Under his leadership, the division would go on to complete several iconic World War II-era aircraft, including the famed Zero fighter designed by Horikoshi and the G4M bomber designed by Honjo.

Hattori’s notable abilities lie in his technical leadership and management. He is an accomplished senior engineer capable of guiding a major aircraft design department. His greatest strength is his ability to recognize and support promising, innovative engineering concepts from his staff, a quality that directly contributes to the development of historically significant aircraft.