Originally 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 Gel-Shocker 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 pleas the Kamen Riders to make him into a cyborg just like them. The two Kamen Riders refuse at first, but after Shiro was fatally 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.
Across the series, Shiro battled Destron's cyborg monsters, eventually uncovering his newfound abilities while battling the likes of Doktor G, Baron Fang, and Archbishop Wing. When faced with Destron's strongest general, Marshal Armor, V3 was joined in his battle by ex-Destron scientist Jōji Yūki/Riderman and the Double Riders.
Eventually, V3 defeated the Destron Leader and departs on his motorcycle to parts unknown.
Kamen Rider V3 26 Secrets
At V3's disposal are 26 Techinques and Weapons that were designed to aid V3 in a variation of ways from enchancing his abilities to destroying certain enemies.
- Double Typhoon (ダブルタイフーン Daburu Taifūn?)
Kamen Rider V3's first and foremost weapon - the Henshin belt "Double Typhoon". Kazami Shiro transforms into V3 by performing the "Henshin", a series of moves which activates the 2 revolving pistons of the Double Typhoon, and then converts the accumulated wind energy to transform Kazami into Kamen Rider V3.
Kamen Rider V3 is powered by the right "Kamen Rider No.1 Typhoon" and the left "Kamen Rider No.2 Typhoon". This allows V3 to utilize both the "Skill" of No.1 and the "Strength" of No.2
- Super Sensitive Antenna (超触覚アンテナ, Chō Shokkaku Antena)
The communication device between Kamen Rider V3 and the Double Riders. It can be used to communicate with the Shonen Rider Squad Headquarters and the scouts' individual Pendants.
- V3 Hopper (Ｖ３ホッパー Bui Surī Hoppā)
The V3 Hopper is a surveillance advancement built into V3 by the Double Riders. Residing in a holster on the left side of V3's Henshin Belt, this mini transmission satellite is rocket-propelled vertically into the air to allow V3 an extensive view of the surrounding terrains, or to track fleeing enemies. The images captured by the V3 Hopper are directed to V3's Matrix Eye.
- Rider Centrifugal Kick (ライダー遠心キック, Raidā Enshin Kikku)
Spinning in mid-air, it allows the kick to generate massive centrifugal power. In the Kamen Rider Super-1 Movie, V3 uses a similar attack in combination with other Riders, called simply Revolving Kick.
- Special Hardened Muscles (特殊強化筋肉, Tokushu Kyōka Kin'niku)
By calling upon the power of Double Typhoon, Special Hardened Muscles form a powerful resistance.
- V3 Screw Kick (スクリュー・キック)
A special technique that allows a devastating mid-air spinning kick to be dealt to an enemy's body.
- Special Spring Muscles
The spring muscles can withstand up to 10 times the force put against them.
- V3 Drill Attack
The counter-spinning attack used against opponent.
- Red Lamp Power
Red Lamp Power draws in an outside energy directed at V3, and doubles it in return.
- Energy Converter
Located in a circuit box on the right of V3's Henshin Belt. It allows channeling or conversion of internal or external power sources - such as the Double Rider's pendant.
- O Signal
A device which records and analysis enemies' attacks and weapons. The result: V3 learns from his battles and does not lose to a repeated attack/weapon.
- Cellular Strength Device
It causes the fusing of metal blades which come into contact with V3's body; best utilized through the crossing of hands, in order to block and damage metal weapons.
- Red Bone Power
It concentrates all of V3's energy into the center vertical thorax, or "Red Bone", and then expel all the energy at once.
- Scramble Hopper
Special Attachment to the standard V3 Hopper, which creates a sound vibration which disturbs the physical nature of mutants and legionnaires; also can create a limited personal barrier to protect humans from mutant attacks.
- V3 Return Kick (Ｖ３反転キック, Bui Surī Hanten Kikku)
Kamen Rider V3's signature move. It allows a repeat kick, via springing off the monster, to the exact point of first contact. In Skyrider's movie, Eight Riders vs. Galaxy King, this attack is called V3 Double Kick.
- V3 Barrier
1,000,000 volts of electricity are run throughout the surface as an effective deflector.
- Reverse Double Typhoon
It expels the energy stored in the belt, causing a power concussion to the target. After performing the Reverse Double Typhoon, Kazami can only re-transform to V3 after a three-hour period.
- Oxygen Cylinders
It stores up to 3 hours of oxygen for marine battles.
- Electro Eye
It can trace the undetectable footprints of kaijin.
- Matrix Eye
The X-rays can penetrate a mutant's body to locate its weak point.
- Gliding Muffler
The mufflers on the back assists in guiding V3 while flying, or gliding to earth.
- Propeller Chop
Its special muscles allows arms to spin as a propeller, to deliver powerful blows.
- V3 Thunder
A 1,000,000 volts electrical charge fired from V3's antennae.
- Freezer Shot
It pulls full internal power to focus a sub-zero effect on an opponent or object, shot from the antennae.
- Red Bone Ring
It detaches from V3's body to form a rolling weapon.
- Flame Pillar Kick
Nuclear-generated power is transferred into V3's foot to allow a burning and explosive kick.
- Revolving Kick (回転キック Kaiten Kikku)
A V3 Kick preceded by a revolving movement to give it more power. Used in conjunction with similar attacks from Riderman and X.
- Triple Kick
A V3 Kick used alongside Super-1's and Black's Rider Kicks.
- The Hurricane
The Motorcycle which was used in his rider form. It can execute the Hurricane Dash and the Hurricane Last Dash in mid-air.
Kamen Rider V3
Kamen Rider X
Kamen Rider Amazon
Kamen Rider Super-1
Kamen Rider ZX
Kamen Rider Black/RX
Kamen Rider Kuuga