Several S.I.C. Hero Saga stories feature new forms accessed by Riders which did not appear in their respective Kamen Rider Series.

Kamen Rider Amazon (Pre-Stage)

Kamen Rider Black RX (After 0)

Kamen Rider Agito (The Man that has Become a Kamen Rider)

Kamen Rider Ryuki (Advent Calender and World of If)

Kamen Rider Blade (Hero Saga Special Edition: King / Clover)

Kamen Rider Wizard (The Sorcerer's Apprentice)

Kamen Rider Decade (Kamen Rider Decade: World of OOO)

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