Raidō Namiashi is a Tokubetsu Jōnin of Konohagakure.

Despite the handful of fights he has been in, Raidō has yet to be seen in extended combat. Given that he was a bodyguard for the Third Hokage, and that the Sound Four needed to activate their cursed seals in order to defeat him, it is likely that he is a formidable fighter. It was shown that when Hidan and Kakuzu attempted to kill Kotetsu and Izumo, Raidō successfully attacked and fended off Kakuzu with a unique sword called "Ebony Blade" (黒刀, Kokutō), which resembles a katana with a darkened, non-reflective surface.