Kiva is the culmination of the symbiotic relationship between a Kivat and a Fangire or someone of Fangire descent. Kiva is a combination of the Japanese word for fang ,"Kiba", and "vampire".
Forms
Kiva Form
 Kiva Form is the default form upon transformation by a non Fangire wielder. Wataru simply attaches KivatBat III onto the Kivat Belt. When in that form, the chest is a blood red color with the eyes a golden yellow. This form specializes in hand to hand combat. It's finisher is known as the Darkness Moon Break. |
Garulu Form
 Garulu Form is a form that is accessed with the use of the Garulu Fustle. When summoned, the arms monster, Garulu, transforms into a Kriss like sword called the Garulu Saber. Upon transforming into this form, Kiva's chest and eyes shift to a blue color and the left arm transforms into a blue Wolf-like pattern. In this form, Kiva is influenced by the arms monster's wild and rash personality but is bestowed with the monster's fighting skill. |
Basshaa Form
 Basshaa Form is is a form that is accessed with the use of the Basshaa Fustle. When summoned, the arms monster, Basshaa, transforms into a gun called the Basshaa Magnum. Upon transforming into this form, Kiva's chest and eyes shift to a green color and the right arm transforms into a green fish-like pattern. In this form, Kiva is influenced by the arms monster's calm and focused personality and is bestowed with the monster's exceptional Marksmanship. |
Dogga Form
 Dogga Form is a form that is accessed with the use of the Dogga Fustle. When summoned, the arms monster, Dogga, transforms into a large war hammer called the Dogga Hammer. Upon transforming into this form, Kiva's chest and eyes shift to a purple color and both arms transform into a purple armored-like pattern. In this form, Kiva is influenced by the arms monster's burly personality and is bestowed with monster's unbelievable strength. |
DoGaBaKi Form
 DoGaBaKi Form is a combination of Dogga, Garulu, and Basshaa's manifestations as a result of being absorbed by the Beetle Fangire. With this, all the Arms Monsters can be used without the use of Fustles to summon them. |
Dark Kiva
 Dark Kiva is the original and most powerful incarnation of Kiva. Although not an actual form accessible though what we know from the more commonly shown Kiva, Dark Kiva is still essentially the same power, just much greater. |
Armaments
The Kivats
The Kivats (Kivat Bat II and seperately his son, Kivat III) are the medium of which to allow a wielder to transform into Kiva. Kivat III is also able use of the fustles that summon the Arms Monsters that grant the lesser Kiva different forms.
Garulu Saber
The Garulu Saber is a Kriss like sword that serves to grant Kiva Garulu Form. Bestowing Kiva the fighting skill of it's original identity.
Basshaa Magnum
The Basshaa Magnum is a pistol like weapon that serves to grant Kiva Basshsaa Form. Bestowing Kiva the marksmanship of it's original identity.
Dogga Hammer
The Dogga Hammer is a war hammer like weapon that serves to grant Kiva Dogga Form. Bestowing Kiva the immense strength of it's original identity.
Castle Doran
Castle Doran is a Dragon that was captured by the Fangires and was transformed into a castle. It houses the Arms Monsters acts as the main headquarters for the Fangires.
| KAMEN RIDER DECADE |
|---|
| Decade | Diend | Other Riders |
| Characters | Monsters |
| Episodes |
| Preceeded by Kiva | Succeeded by Double |
