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Souji (ソウジ) is Tendou's alternative incarnation from Kamen Rider Decade.

Souji
He is a young man who had been given the Kabuto Zecter by the ZECT corporation to be one of its agents in destroying the Worm menace that had befallen his world. However, an encounter with the Phylloxera Worm who mimicked Souji completely, caused the Zecter's Clock Up system to malfunction, trapping Souji in warp speed.

Prior to the start of the Kabuto World arc, Souji encountered the Phylloxera Worm which mimicked his form before he took one of its eyes out with his sister Mayu the sole witness before the malfunction occurred. This led to Souji's Worm mimic to become Sou Otogiri, the user of the TheBee Zecter, and led Mayu to hold a grudge against Kabuto, believing that he murdered her brother Souji. However, in spite of being unable to be with her, Souji does everything in his power to protect Mayu while supporting ZECT in exterminating Worms.

However, once deemed a menace by ZECT higher ups, Kabuto is pursued by the group under Otogiri as he commissions the development of a Clock Down System before tricking Mayu to come with her. Eventually, the truth behind Kabuto is revealed as the Clock Down System takes effect when he attempts to save Mayu, who has been revealed to be the Native Sisyra Worm, from Otogiri. After Tsukasa Kadoya arrives to his aid, the two Riders defeat the Phylloxera Worm while destroying the tower broadcasting the Clock Down waves. Souji slowly disappears back into traveling at the speed of light as Mayu sees him for one last time.

He later appears to help revive Tsukasa in Kamen Rider × Kamen Rider W & Decade: Movie War 2010 and battles Super Shocker, assuming Hyper Form as a result of Decade's K-Touch and later into his Zecter Kabuto form with the All Rider Final Form Ride Card to fight the Super Crisis Fortress.

Later appearances
Movie War 2010 currently remains the last appearance of Souji. The Kabuto that appears in OOO, Den-O, All Riders: Let's Go Kamen Riders and Kamen Rider × Super Sentai: Super Hero Taisen is the original Kabuto, Souji Tendou.

Forms
Just like the original Kabuto, Souji's arsenal revolves around the use of the Kabuto Zecter to transform into Kamen Rider Kabuto.

Masked
"Henshin!"

- Transformation announcement

Souji only used Kabuto's Masked Form (マスクドフォーム) when he transformed with Tsukasa Kadoya to fight Phylloxera Worm. Once affixed to the Henshin Belt, Souji assumes his armored Masked Form, but this armor can be taken off to become the sleeker Rider Form. Unlike in the series, the Zecter didn't announce the usual CHANGE BEETLE when Kabuto casts off, although it still retained the CAST OFF exclamation.
 * Height: 190cm
 * Weight: 132kg
 * Punching Power: 8t
 * Kicking Power: 10t
 * Maximum Jump Height: 20m
 * Maximum Running Speed: 100m/8.9s

Rider
"Cast Off!"

- Transformation announcement

In most of his appearances in Kamen Rider Decade, Souji used Kabuto's Rider Form (ライダーフォーム). In Rider Form, Kabuto has access to the Clock Up System, which allows the user to travel at near light speeds to match the Worm's speedy metabolism. To destroy Worms, Kabuto has the Kabuto Kunai Gun, a versatile weapon that can be used as a gun, an axe, or a kunai, all of which allow him to perform the Rider Beat, or his roundhouse Rider Kick.
 * Height: 195cm
 * Weight: 95kg
 * Punching Power: 3t
 * Kicking Power: 7t
 * Maximum Jump Height: 37m
 * Maximum Running Speed: 100m/5.8s
 * Rider Kick Finisher: 19t

Hyper
"Hyper Cast Off: Change Hyper Beetle!"

- Transformation announcement

Souji only used Hyper Form (ハイパーフォーム), an even stronger version of Rider Form, with help from Kamen Rider Decade's K-Touch in Kamen Rider × Kamen Rider W & Decade: Movie War 2010. He was armed with Perfect Zecter.
 * Height: 198cm
 * Weight: 102kg
 * Punching Power: 15t
 * Kicking Power: 18t
 * Maximum Jump Height: 50m
 * Maximum Running Speed: 100m/4.2
 * Rider Kick Finisher Power: 35t

Final Form Ride
Kamen Rider Decade's Final FormRide allows Kabuto to change into Zecter Kabuto (ゼクターカブト), a giant version of the Kabuto Zecter that flies and can be ridden by Decade. It is able to burrow underground.

Kabuto Zecter



 * Device Type: Kabuto Buckle ('Henshin' Belt)
 * Animal: Japanese Rhinoceros Beetle
 * Color: Red
 * Cast-Off System: Flipping the switch-like Zecter Horn on the Kabuto Zecter over.
 * Clock Up System: Slap the Switch-pads on the hip of the belt
 * Primary Finisher: RIDER KICK - Kabuto inputs the button sequence [1-2-3] on the Kabuto Zecter and switches its horn-like lever back to its default position. When the horn-switch is flipped again, a tachyon charge surges from the Kabuto Zecter to the Kabuto Horn where it is refined, then transmitted to Kabuto's right foot. Kabuto later executes roundhouse kick Rider Kick to the enemy head

Perfect Zecter


The Perfect Zecter (パーフェクトゼクター) is Hyper Kabuto's signature weapon. This weapon has two modes as shown in original series: Sword Mode (ソードモード) and Gun Mode (ガンモード) but Souji only shown used it in Gun Mode.
 * Maximum Hyper Cyclone (マキシマムハイパーサイクロン): After activating all of the Zecter Powers and announcing "All Zecter Combine", the Perfect Zecter releases a vortex of tachyon-charged energy that is able to annihilate multiple enemies at once. However, the recoil is so powerful, he must access Hyper Clock Up to withstand it. But during this state, Hyper Clock Up only affects Kabuto.

Portrayal
Souji is portrayed by Daijiro Kawaoka (川岡 大次郎). As Kamen Rider Kabuto, his suit actor is Jun Watanabe (渡辺 淳).

Last Name

 * Souji's surname was never revealed by Toei. Toei only credits him as 'Souji'.