Oniwabanshū (御庭番) were a spy and intelligence group established by Shogun Yoshimune Tokugawa during the Edo Period.
- Toshinobu Hattori (服部 季信) Chief Superintendent of Mie Prefectural Police/Chief of NOWB.
- Shōtarō Tsukimori (月森 勝太郎) Aichi Prefectural Police. Scion of the Tsukimori Family, which he's skeptical about.
- Kai Takahashi (高橋 魁) Aichi Prefectural Police.
- Mitsutoshi Takagi (高木 光敏)
- Keiichi Edogawa (江戸 圭一)
- Masato Shimada (島田 真人)
- Rurouni Kenshin
- The Great Detective Kiyoshiro Yumemizu (名探偵夢水清志郎事件ノート)
- Abarenbō Shōgun (暴れん坊将軍)
- Hattori Hanzo: Kage no Gundan (服部半蔵 影の軍団)