Kamen Rider Faiz Accel comes from Kamen Rider 555, the Japanese tokusatsu series that aired in 2003, where the hero Takumi Inui transforms using the Faiz Driver and later gains the Accel form for bursts of super speed. The startup sound became a favourite on soundboards and in fan edits because it instantly signals that upgrade, and it still circulates in henshin compilations, cosplay videos and tokusatsu memes long after the original broadcast.