Dai-Shocker also known as Great Shocker is the name an evil organization appeared in Kamen Rider Decade series, Kamen Rider Decade: All Riders vs. Dai-Shocker, and Kamen Rider x Super Sentai Superhero Taisen. The idea of an organization composed of various villains from across the Kamen Rider Series previously was used with the Badan Empire in Birth of the 10th! Kamen Riders All Together!! and GranShocker in Kamen Rider SD.