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Official Site: Toei Company

is a fictional character from the Japan tokusatsu television series Kamen Rider V3, the second in the famous Kamen Rider franchise of tokusatsu programs. The primary protagonist of the series, Kamen Rider V3 is a motorcycle-riding superhero modeled upon a dragonfly and armed with a variety of powers. His name is an abbreviation for "Version Three" as he is the third Kamen Rider. In the original series, he was portrayed by Hiroshi Miyauchi. In the movie Kamen Rider The Next, V3 is portrayed by Kazuki Kato and voiced by Hirofumi Tanaka in Kamen Rider Decade: All Riders vs. Dai-Shocker.

The meaning for Kamen Rider V3's name was never clearly depicted in the series. The first meaning suggested it was a pun because both Ichigō and Nigō used their powers to energize V3's belt during Shirō Kazami's surgery, making him more powerful than its predecessors. However, in the 2007 remake movie Kamen Rider The Next, V3's belt explains it stands for "Version 3" Kamen Rider.

, born 3 November 1950, was a 22-year-old college student at Jōnan University with a major in biochemistry. But by chance, he accidentally witnessed the brutal murder of a road worker by a member of the secret terrorist society known only as Destron, which appeared after the destruction of Gelshocker and continues its predecessor's goal of world domination. To rid Destron of its witness, and taking no chances, they sent Scissors Jaguar to murder the entire Kazami family. Though he was forced to watch his family die before his eyes, Shiro was saved from the same grisly fate by the interference of Kamen Riders #1 and #2.

Bent on revenge for his family's deaths, Shiro pleads with the Kamen Riders to make him into a cyborg just like them. The two Kamen Riders refuse at first, but after Shiro is mortally wounded while saving them, the two had no choice but to respect his wishes. As the Double Riders performed the operation, the Destron outpost is attacked and destroyed by Turtle Bazooka. The Double Riders were at a major disadvantage until Shiro joined the battle, now known as Kamen Rider V3. V3 went on to destroy his family's murderer while the Double Riders fought Bazooka Turtle, who now had a nuclear bomb in his body with intentions to destroy Tokyo. The Double Riders, feeling that Kazami is a worthy successor, take Turtle Bazooka away from the city just before the bomb explodes, leaving V3 to protect Japan on his own.

Kamen Rider V3 has not been a contender in any CBUB matches.