Publication Information
- Kamen Ride : Showa Riders
- Japanese : 昭和仮面ライダーシリーズ
- Usage : Transformation Cards
- User : Kamen Rider Decade
- Season : Kamen Rider Decade
- System : Rider Card
- Main View : Full Episod
Like the Heisei Riders, Decade is shown owning Rider Card versions of the 15 Showa Kamen Riders, but is seen only using one of the cards.
Kamen Ride : Ichigo
- Kamen Ride : Ichigo
- Kamen Ride: 1 (Ichigō)! ― Transformation announcement
- With the 1 card, Decade transforms into Kamen Rider 1. He was never seen using it onscreen, but was seen using this form when fighting a supposed Akarenger from the past in Super Hero Taisen.
- Kamen Ride : Nigo
- Kamen Ride: 2 (Nigō)! ― Transformation announcement
- With the 2 card, Decade transforms into Kamen Rider 2, but it is never seen in the series
- Kamen Ride : V3
- Kamen Ride: V3! ― Transformation announcement
- With the V3 card, Decade transforms into Kamen Rider V3, but it is never seen in the series
- Kamen Ride : Riderman
- Kamen Ride: Riderman! ― Transformation announcement
- With the Riderman card, Decade transforms into Riderman, but it is never seen in the series
- Kamen Ride : X
- Kamen Ride: X! ― Transformation announcement With the X card, Decade transforms into Kamen Rider X, but it is never seen in the series
Kamen Ride : Amazon
- Kamen Ride : Amazon
- Kamen Ride: Amazon! ― Transformation announcement With the Amazon card, Decade transforms into Kamen Rider Amazon, but it is never seen in the series
- Kamen Ride : Amazon
- Kamen Ride: Stronger! ― Transformation announcement li>With the Stronger card, Decade transforms into Kamen Rider Stronger, but it is never seen in the series.
- Kamen Ride : Skyrider
- Kamen Ride: Skyrider! ― Transformation announcement With the Skyrider card, Decade transforms into Skyrider, but it is never seen in the series. However, in Movie War 2010, Decade defeats and reduces Skyrider to nothing more then a Rider Card
- Kamen Ride : Super-1
- Kamen Ride: Super-1! ― Transformation announcement With the Super-1 card, Decade transforms into Kamen Rider Super-1, but it is never seen in the series.
- Kamen Ride : ZX
- Kamen Ride: ZX! ― Transformation announcement With the ZX card, Decade transforms into Kamen Rider ZX, but it is never seen in the series
Kamen Ride : Black
- Kamen Ride : Black
- Kamen Ride: Black! ― Transformation announcement With the Black card, Decade transforms into Kamen Rider Black, the first time he received this card it was stolen by Diend to be used to call Black, claiming that Decade can't use the card just yet.
- Kamen Ride : Black RX
- Kamen Ride: Black RX! ― Transformation announcement With the Black RX card, Decade transforms into Kamen Rider Black RX, but it is never seen in the series.
- Kamen Ride : Shin
- Kamen Ride: Shin! ― Transformation announcement With the Shin card, Decade transforms into Kamen Rider Shin, but it is never seen in the series
- Kamen Ride : ZO
- Kamen Ride: ZO! ― Transformation announcement With the ZO card, Decade transforms into Kamen Rider ZO, but it is never seen in the series
- Kamen Ride : J
- Kamen Ride: J! ― Transformation announcement With the J card, Decade transforms into Kamen Rider J, but it is never seen in the series
