Kamen Riders' Crossover Forms

Crossover Forms are Rider Forms assumed by Kamen Riders that feature elements outside of the Riders' native series. Most of these forms utilize the powers of another Rider, either the protagonist's immediate predecessor or successor. In some other cases, the form is the power of a Rider who is not the immediate predecessor or successor. These forms, like Hyper Battle forms, are usually used only once or twice and are never mentioned or used in series canon again.
The real world purpose of these forms are threefold: to advertise the Legend Rider toy devices that Bandai sells annually, a special addition to the Riders power's for the Movie War films to add to the excitement for moviegoers and the forms acting as playable form change power ups for the Ganbarizing game.
==Kamen Rider: OOO==
*Kamen Rider OOO
**Soul Combo
OOO-Soul.png|OOO Tamashii Combo
==Kamen Rider: Armor Warrior==
<tabber>
|-|Armor Warrior=
*Kamen Rider Armor Warrior
**Ringzard Arms
**Warrior Leader Arms
**Drive Arms
**Masked Rider Arms
**Dragon Knight Arms
**Electric King Arms
**Chrono Warrior Arms
**Double Detective Arms
**OOO Arms
**Quadronaut Arms
GAIM-WIZARD.png|Armor Warrior Ringzard Arms
1GoArms.PNG.png|Armor Warrior Warrior Leader Arms
KRGa-Drivearms.png|Armor Warrior Drive Arms
Mmd black rx arms son of the sun by zeltrax987 d7qtsth-fullview.png|Armor Warrior Masked Rider Arms
Gaim Ryuki Arms.png|Armor Warrior Dragon Knight Arms
Den-O Arms Gaim.png|Armor Warrior Electric King Arms
G-D YRS.png|Armor Warrior Chrono Warrior Arms
Gaim W Arms.png|Armor Warrior Double Detective Arms
Gaim-OOO.PNG|Armor Warrior OOO Arms
G.F.Arms.jpg|Armor Warrior Quadronaut Arms
|-|Baron=
*Kamen Rider Baron
**OOO Arms
**Electric King Arms
**Ringzard Arms
BARON-OOO.png|Baron OOO Arms
BaronDenO.png|Baron Electric King Arms
Baron-Wizard Arms.PNG.png|Baron Ringzard Arms
|-|Dragon Defender=
*Kamen Rider Dragon Defender
**Double Detective Arms
**Phi Arms
**Quadronaut Arms
RYUGEN-W.png|Dragon Defender Double Detective Arms
RyugenFaiz.png|Dragon Defender Phi Arms
RyugenFourze.png|Dragon Defender Quadronaut Arms
|-|Moon Blade=
*Kamen Rider Moon Blade
**Quadronaut Arms
**Beetleborg Arms
**Chrono Warrior Arms
ZANGETSU-FOURZE.png|Moon Blade Quadronaut Arms
ZangetsuKabuto.png|Moon Blade Beetleborg Arms
tumblr_inline_n48ls02Te61qk32ya.png|Moon Blade Chrono Warrior Arms
|-|Fifteen Skeleton=
*Kamen Rider Fifteen Skeleton
**Ringzard Arms
**Chrono Warrior Arms
**Quadronaut Arms
**Armor Warrior Arms
KR-15WIZARD.png|Fifteen Skeleton Ringzard Arms
KR-15DECADE.png|Fifteen Skeleton Chrono Warrior Arms
KR-15FOURZE.png|Fifteen Skeleton Quadronaut Arms
Armored_Fifteen.png|Fifteen Skeleton Armor Warrior Arms
|-|Barker=
*Kamen Rider Barker
**Double Detective Arms
GridonDouble.png|Barker Double Detective Arms
|-|Pine=
*Kamen Rider Pine
**Spade Warrior Arms
KurokageBlade.png|Pine Spade Warrior Arms
|-|Bravo=
*Kamen Rider Spike
**Echo Demon Arms
Bravo Hibiki Arms.png|Spike Echo Demon Arms
|-|Knuckleman=
*Kamen Rider Knuckleman
**Mystica Arms
KnuckleKuuga.png|Knuckleman Mystica Arms
|-|Moon Blade Final=
*Kamen Rider Moon Blade Final
**Mystica II Arms
ZangetsuShinAgito.png|Moon Blade Final Mystica II Arms
|-|Sengoku=
*Kamen Rider Sengoku
**Ringzard Arms
DukeWizard.png|Sengoku Ringzard Arms
|-|Sigurd=
*Kamen Rider Sigurd
**Vampire King Arms
SigurdKiva.png|Sigurd Vampire King Arms
|-|Marika=
*Kamen Rider Marika
**Quadronaut Arms
MarikaFourze.png|Marika Quadronaut Arms
</tabber>
==Kamen Rider: Drive==
*Kamen Rider Drive
**Type Fruits
KRDr-Typefruits.png|Drive Type Fruits
Category:Rider Forms