A central detective figure in the film series, explicitly featured in the 1979 and 1981 installments. In 'Beauty with White Breasts' (1981), he actively investigates a gruesome serial clown targeting women, showcasing his role as a methodical investigator who unravels psychological and criminal mysteries adapted from Edogawa Ranpo's works. He serves as the primary protagonist for the early, mystery-driven chapters of the universe, though his narrative focus shifts away in the later political thriller installment.