Souji

''This article refers to Kamen Rider Kabuto in Kabuto's world and appears as a character for the show, Kamen Rider Decade. For the Original Kamen Rider Blade see Souji Tendo ''

Fictional character biography
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 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 travelling at the speed of light as Mayu sees him for one last time.

Forms
Just like the original Kabuto, Souji's arsenal revolves around the use of the Kabuto Zecter. Once affixed to the Henshin Belt, Kabuto 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. 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 knife, or his roundhouse Rider Kick. Decade's Final FormRide allows Kabuto to change into Zecter Kabuto (ゼクターカブト, Zekutā Kabuto?), a giant version of the Kabuto Zecter that flies and can be ridden by Decade.