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Description
Alternative and a prototype called Alternative Zero were mimicries of the 13 Kamen Riders and not considered true Kamen Riders, only Rider-like, as its wearers do not acknowledge themselves as Kamen Riders. Because they were designed by Kagawa and not by Shiro Kanzaki, the Alternatives' Advent Cards differ from the ones used by the Kamen Riders.

Description
Alternative and a prototype called Alternative Zero were mimicries of the 13 Kamen Riders and not considered true Kamen Riders, only Rider-like, as its wearers do not acknowledge themselves as Kamen Riders. Because they were designed by Kagawa and not by Shiro Kanzaki, the Alternatives' Advent Cards differ from the ones used by the Kamen Riders.