In some rare cases, a Kamen Rider is part of the same species/organization that the antagonists are from. These Kamen Riders all possess monster forms separate from their Rider powers and equipment and their affiliation can be either good or evil.

In a few minor cases, the form in question is only temporary and they can have their humanity restored or at the very least regain control of their human nature and transform back into their original persona again.

Showa

Kamen Rider

Kamen Rider Black

Heisei

Kamen Rider Agito

Kamen Rider Ryuki

Kamen Rider 555

Kamen Rider Blade

Kamen Rider Kabuto

Kamen Rider Den-O

Kamen Rider Kiva

Kamen Rider Decade

Kamen Rider W

Kamen Rider OOO

  • Kamen Rider OOO
    • Eiji Greeed (Lost with the destruction of 7 of the 10 Purple Core Medals)

Kamen Rider Wizard

Kamen Rider Gaim

Kamen Rider Drive

  • Kamen Rider Heart
    • Plain Roidmude 002
    • Heart Roidmude
    • Evolved Heart Roidmude
    • Proto Body

  • Kamen Rider Brain (dream only)
    • Plain Roidmude 003
    • Brain Roidmude
    • Evolved Brain Roidmude

Kamen Rider Ghost


Kamen Rider Ex-Aid

Kamen Rider Build

Kamen Rider Zi-O

Reiwa

Kamen Rider Zero-One

Other

Kamen Rider Amazons

Adaptation

Kamen Rider: Dragon Knight

Notes

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