Juzo Fuwa is one of the villains in Samurai Sentai Shinkenger. He is a mysterious Gedoshu, regarded by the others as a lone wolf (or "stray"), yet he appears to know more than Dokoku Chimatsuri about the Sanzu River's true potential.
200 years ago, Juzo was a human master swordsman in life, eventually becoming disenchanted with the ways of bushido and thriving more on the pleasure of killing his opponents in battle. He meets Akumaro who provides him with the katana Uramasa to use as he wishes, seemingly unaware that the blade was forged from the souls of his family who tried to free him from his blood lust. When he contracts a fatal illness, Juzo enters the Sanzu River to cheat death, completely discarding the goodness in his heart to become a Gedounin, a half-Gedoushu that can freely exist in both realms and assume a human form.
However, unlike other Gedounin who die out in a few years, Juzo endured over the centuries and thus is condemned with an insatiable urge to find an ideal opponent, a fellow samurai who strays from the teachings of bushidō, to clash blades with. As a result, Juzo mistakes the blade's cries of sadness for an equal lust for battle, though he later claims that his family has lost their desire to stop him after he entered the Sanzu River.
He finds his seemingly-ultimate opponent in Takeru Shiba, after witnessing his sword fighting as ShinkenRed. This obsession with fighting Takeru leads Doukoku to seal Juzo's Gedoushu powers, leaving him for dead in the Sanzu River. Although he barely survives with Dayu's aid, he continues to defy Doukoku by making sure that Takeru is at his strongest for their next fight, even curing him of Shitari's poisoning. After a long battle in which he manages to severely wound ShinkenRed, Juzo is defeated and falls off the cliff into the ocean below.
However, Juzo survives, with the Uramasa's blade shattered. He remains in the mountainside until Dayu finds him and relays Akumaro's offer to work for him in return for restoring his blade. To his chagrin, he has to rely on a replacement broadsword that hampers his normal fighting style. Later fed up waiting for the Uramasa to be repaired, Juzo confronts Akumaro and learns his weapon's origins, and that he has been nothing but a pawn in Akumaro's plan. As it turns out, though, he knew the history behind his blade, having desired nothing but the bloodshed throughout his life. In one last battle against Takeru, he finally gets destroyed by Takeru's sword, which slices him in two. And, as he was destroyed, so was the Uramasa.
- Deker - Power Rangers counterpart in Samurai'.