Tsukasa Kadoya (brainwashed)

1="I'm just a passing-through Kamen Rider. Remember that!"

- Tsukasa's answer when asked who he is

2="You will never learn."

- Tsukasa before using the K-Touch.

Tsukasa Kadoya (門矢 士) is Kamen Rider Decade (仮面ライダーディケイド).

Form
Agito=

{{#tag:tabber| Decade= {{#tag:tabber| Default= Decade {{Quote|Kamen Ride: Decade!|Transformation announcement|Kamen Rider Decade}} Rider Statistics Ability Parameters Decade can transform into any previous Kamen Rider with access to that respective Rider's powers and weapons. However, during the battle against Kamen Rider Dark Kiva in the Nega World, Tsukasa had lost his power to transform into Kamen Rider Decade as well as all the Rider Cards losing their power and turning black. Later, Tsukasa was able to restore his power and all the cards returned to normal. One of Tsukasa's particular gestures is dusting his hands, or running a hand along the blade of his sword, while fighting.
 * Height: 192 cm.
 * Weight: 83 kg.
 * Punching Power: 4 t.
 * Kicking Power: 8 t.
 * Maximum Jump Height: 25 m.
 * Maximum Running Speed: 100 m. per 6 sec

Kamen Rider Decade's ending theme is "Ride the Wind".

- Kamen Rides= {{#tag:tabber| Heisei Riders= Through the Kamen Ride and Form Ride cards Decade can transform into any of the other Heisei Era Kamen Riders (except for Kamen Rider Zi-O) and their forms, with the exception of their most powerful forms. {{#tag:tabber| Pine= {{Quote|Form Ride: Gaim Pine Arms! Pine Arms: Funsai Destroy! |Transformation announcement|Kamen Rider Decade}}

With the Gaim Pine Arms card, Decade transforms into Kamen Rider Gaim's Pine Arms. {{-}} - Drive= {{Quote|Kamen Ride: Drive! (upbeat jazz music)|Transformation announcement|Kamen Rider Decade}}

With the Drive card, Decade transforms into Kamen Rider Drive's Type Speed.

{{-}} - Build= {{Quote|Kamen Ride: Build! Hagane no Moonsault! RabbitTank! Yeahhh! |Transformation announcement|Kamen Rider Decade}}

With the Build card, Decade transforms into Kamen Rider Build's RabbitTank Form. {{#tag:tabber| NinninComic= {{Quote|Form Ride: Build NinninComic Form! Shinobi no Entertainer! NinninComic! Yeahhh! |Transformation announcement|Kamen Rider Decade}}

With the Build NinNin Comic Form card, Decade transforms into Kamen Rider Build's NinninComic Form. {{-}}

Woz= {{Quote|Kamen Ride: Woz! Sugoi! Jidai! Mirai! Kamen Rider Woz! Woz!|Transformation announcement|Kamen Rider Decade}}

With the Woz card, Decade transforms into Kamen Rider Woz. {{#tag:tabber| Futuring Shinobi= {{Quote|Form Ride: Woz Futuring Shinobi! Dare ja?! Ore ja?! Ninja! Futuring Shinobi! Shinobi!|Transformation announcement|Kamen Rider Decade}}

With the Woz Futuring Shinobi card, Decade transforms into Kamen Rider Woz's Futuring Shinobi. {{-}} }} {{-}} }} {{-}} {{!}}-{{!}}

Complete= Complete Form {{Quote|Double! OOO! Fourze! Wizard! Gaim! Drive! Ghost! Ex-Aid! Build! Final Kamen Ride: Decade!|Transformation announcement|Kamen Rider Decade}} Rider Statistics Ability Parameters {{nihongo|Complete Form|コンプリートフォーム|Konpurīto Fōmu}} is the true form of Decade that is able to manipulate the power of other Riders' final forms, accessed through the K-Touch once he regains the powers of all of the Heisei Kamen Riders. Referred to as the "King of the Rider Worlds", he wears the Decade Complete Kamen Ride Card on his helmet, embedded in the Decade Crown, and the others' Kamen Ride Cards on his chest. {{-}} }} {{Quote|Kamen Ride: Agito! (Alter Ring Ground Form Transformation sound)|Transformation announcement|Kamen Rider Decade}} With the Agito card, Decade transforms into Kamen Rider Agito's Ground Form. {{-}} - Ghost= {{Quote|Kamen Ride: Ghost! Let's go! Kakugo! Go-go-go-ghost! Go! Go! Go! Go!|Transformation announcement|Kamen Rider Decade}}
 * Height: 199 cm.
 * Weight: 102 kg.
 * Punching Power: 12 t.
 * Kicking Power: 16 t.
 * Maximum Jump Height: 50 m.
 * Maximum Running Speed: 100 m. per 4 sec.

With the Ghost card, Decade transforms into Kamen Rider Ghost's Ore Damashii.

In this form, Decade can summon Parka Ghosts to assist him in combat.

Appearances: Zi-O Episode 14 {{-}} - Gaim= {{Quote|Kamen Ride: Gaim! Orange Arms: Hanamichi on Stage!|Transformation announcement|Kamen Rider Decade}}

With the Gaim card, Decade transforms into Kamen Rider Gaim's Orange Arms.