Gashats are special devices used in the Japanese tokusatsu series Kamen Rider Ex-Aid. They resemble video game cartridges and are essential for transforming the main characters into their superhero forms. Each Gashat contains unique abilities and powers, often inspired by different video game genres. In the series, the characters, known as Kamen Riders, use Gashats to battle against various enemies called Bugsters. The Gashats can also be combined to create new forms and enhance the Riders' abilities, making them a central element of the show's gameplay theme and narrative.