|This article is about a/an set of riders in the Kamen Rider Series.|
- "I'm your only friend"
- ―Hayato Ichimonji (reboot)[src]
Often, a major plot point of a Kamen Rider series is the appearance of the rival and being the opposite of the protagonist, usually a Kamen Rider whose motives don't mesh with those of the lead character. These rivals can be anti-heroic but rarely villainous. They serve as both foil and companion to the lead rider. They develop an often begrudged relationship at first which develops into a strong camaraderie.
Rival riders often appear the first time in the episodes that serve the storytelling function of a mid-season premiere.
List of rivals
- Kamen Rider Gaim
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