The Ex-Aid Driver is a transformation device used by the character Emu Hojo in the Japanese tokusatsu series Kamen Rider Ex-Aid. This device allows Emu to transform into the Kamen Rider known as Ex-Aid, who fights against digital monsters called Bugsters. The Ex-Aid Driver features a unique design that incorporates video game elements, reflecting the series' theme of gaming. To activate the transformation, the user inserts a Gashat, which is a game cartridge that grants specific abilities and powers. Each Gashat corresponds to different game genres, allowing Ex-Aid to adapt his skills in battle. The Ex-Aid Driver is central to the series' plot, showcasing the blend of gaming and heroism.