Dai-Shocker

The mysterious Dai-Shocker (大ショッカー Dai Shokkā, "Great Shocker") is an evil organization lead by A.R. versions of classic Showa-era villain generals. They seek to take over all dimensions due to someone providing the means to do so. Based in the World of Decade, their insignia is double-headed version of Shocker's eagle crest, but with the "DCD" written on it that hints at Decade's ties to them. In addition to Doctor Shinigami, there are many other members of Dai-Shocker that come from previous Kamen Rider Series. They send their agents out across the worlds to try to conquer the entiremultiverse.

The idea of an organization composed of various villains from across the Kamen Rider Series previously was used with theBadan Empire in Birth of the 10th! Kamen Riders All Together!!and GranShocker in Kamen Rider SD.