- "Turn Up!"
- ―Transformation announcement
The Spade Buckle is a transformation device that Ray Agema uses to become Kamen Rider Spade Warrior. It was the second Rider System developed by BOARD intended as a means to combat the Undead via the fusion of Undead DNA & human DNA. The Spade Buckle was designed for specific compatibility with the ♠A: "Change Beetle" Rouze Card & harnesses the DNA of the Beetle Undead. This model utilizes the "Turn Up" mechanism to produce a stationary transformation screen, which initiates the fusion of Undead DNA with a human to produce the transformation. Coincidentally, the transformation screen itself can act as a deflective wall against assaults.
- Blay Buckle - Kamen Rider Blade counterpart at Kamen Rider Wiki