Kamen Riders' Monster Forms

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.

Kamen Rider Black

 * Kamen Rider Black
 * Batta Man

Kamen Rider 555
Faiz=
 * Kamen Rider Faiz
 * Wolf Orphnoch
 * Horse Orphnoch
 * Dash Form
 * Cactus Orphnoch
 * Snake Orphnoch
 * Centipede Orphnoch

Kamen Rider Blade
Blade=
 * Kamen Rider Blade
 * Joker Undead (Never properly seen in the series)

Kamen Rider Kabuto
TheBee=
 * Kamen Rider TheBee
 * Native Worm
 * Gryllus Worm

Kamen Rider Den-O
Den-O=
 * Kamen Rider Den-O
 * Momotaros
 * Urataros
 * Kintaros
 * Ryutaros
 * Sieg

Kamen Rider Kiva
Kiva=
 * Kamen Rider Kiva
 * Flight Style
 * Bat Fangire (Novel Exclusive)

Kamen Rider Decade
Diend=
 * Kamen Rider Diend
 * Chinomanako

Kamen Rider W
Skull=
 * Kamen Rider Skull
 * Dummy Dopant
 * Death Dopant
 * Ultimate D

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

Kamen Rider Wizard
Wizard=
 * Kamen Rider Wizard
 * All Dragon (S.I.C. Version)

Kamen Rider Gaim
Gaim=
 * Kamen Rider Gaim
 * Byakko Inves (Dream Only)

Kamen Rider Drive
Protodrive/Chaser=
 * Kamen Rider Protodrive/Chaser
 * Proto-Zero

Kamen Rider Ghost

 * Kamen Rider Dark Ghost
 * Gamma Ultima Ebony

Kamen Rider Amazons
Amazon Omega=
 * Kamen Rider Amazon Omega
 * Amazon Origin

Kamen Rider Ex-Aid
Genm=
 * Kamen Rider Genm
 * Bugster Virus