Not every Kamen Rider makes his debut in a full length television series. While these a movie-exclusive Rider is almost obligatory, back before the franchise's Heisei-era revival there were a few "main" Riders that first appeared in films. However Kamen Rider ZX (pronounced "Zed Cross") is a bit of a special case. First appearing in his own manga series in 1982 and then a special radio broadcast, ZX wouldn't appear on television screens for another two years later in Birth of the 10th Kamen Riders All Together!! With this crossover special starring the first ten Kamen Riders not leading into a full series, ZX was all but forgotten as Kamen Rider Black took the mantle in 1987. But after making numerous appearances in recent crossover movies, particularly a prominent one in this years Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai, now seems like the perfect time to dive into this one-off piece of Kamen Rider history...