Showa (昭和;shouwa) is a family introduced in CB19. As the name implies, the family represents the period of Japanese history corresponding to the reign of Emperor Shouwa from December 25, 1926 until his death on January 7, 1989. In the context of entertainment industry, the word "Showa" represents shows and entertainment produced during the Showa era.
Currently, the family is only owned by the Kamen Riders introduced in the Showa era. All cards in this series are Green Spirits. Their main play style is swarming the board, with the help of core boost and the Assemble keyword.