Kamen Rider Outsiders (仮面ライダーアウトサイダーズ, Kamen Raidā Autosaidāzu) is a TTFC -exclusive anthology series serving as a crossover between various Kamen Rider Series. In the special, multiple Kamen Riders fight against the villainous schemes of a returning Foundation X and Zein. Straight from the abrupt ending of Kamen Rider Genms -Smart Brain and the 1000% Crisis- which left us with a few unsolved mysteries debuts in a new TTFC-original series... Kamen Rider Outsiders!