The former for being sister series and having different yet equally valid interpretation of their genres and the latter for helping them being introduced to the greater toku genre and their shared hatred of Sabans Masked Rider. With both the Super Sentai and Power Rangers fanbase.And since chronologically, Skull was active before all Heisei riders note Skull was shown to first be active in November 1999, 2 months before Kuuga began, that would make the Spider and Bat Dopants the first MotWs for the entire Heisei (and 2nd Phase Heisei, if you believe there's a dividing point) era. Fridge Brilliance: Since Skull was chronologically the first Rider to appear in the Double-verse, it could be argued that the Spider and Bat Dopants actually were the first MotWs in Double.Three years later, the 50th anniversary series Kamen Rider Revice faces even stronger speculation about Foundation X thanks to the presence of the aesthetically and nominally similar Kamen Rider-related organization Fenix. Naturally, 2018's 20th Heisei series Kamen Rider Zi-O sparked a lot of speculation about Foundation X that never amounted to anything. It even made a full reappearance in 2017 for a Kamen Rider Build crossover. Foundation X, a mysterious organization interested in the tech of Kamen Riders which was introduced in 2009's W and made further appearances with the following OOO and Fourze, is a common subject of theories for ongoing series, mostly in the context of crossovers.Was Saban intending to adapt Kamen Rider a second time? Was it just a trademark they filed so it couldn't be used? Or was it something else entirely? To a lesser extent, there's 'Power Rider', a trademark Saban filed.but never did anything with.The theory was finally put to rest by Shirakura on twitter, confirming that it was never more than a coincidence. The theory died down over time, as there was little discussion over any presence of tens in Build. A number of fans believe the theory that Toei kept on incorporating the theme even when the Rider's name and number of trinkets didn't reflect it, though just as many think that said believers are only seeing the theme numbers because they want to find the theme numbers, not because said numbers are there on purpose. The first few such series ( Decade to Fourze) had very clear numerical themes, with the number incremented by one every year (Decade's number was 10, but easily serves as 1 in the pattern Double was 'two Riders in one' and used two Memories at once, OOO's Medals came in threes, and Fourze was named for 40 Switches (' Four-zero') and used four at a time). One of the longer-running ones is the 2nd Phase number theory.Complete Monster: Now has a page which includes a list of the most despicable beings in the franchise.

Kamen rider w tv tropes