Within the documented materials for *Guitar o Motta Shōnen - Kikaider vs. Inazuman* and related media, the character Hanpei Hattori remains unmentioned. Instead, the spotlight falls on Jiro as Kikaider, Inazuman, the production team, and overarching plot summaries. Across these sources, Hanpei Hattori's role, backstory, and development remain entirely absent.