Horikoshi Jirou (1903–1982) was the main designer of several Japanese war planes, among them the Mitsubishi A5M and its successor, the legendary Mitsubishi A6M Zero; both aircraft were used by the Empire of Japan during World War II. He was also involved in the design of the Zero's intended successor, the Mitsubishi A7M Reppuu, and the land-based Mitsubishi J2M Raiden interceptor.