This article is about a/an recurring plot element in the Kamen Rider Series.
In certain Kamen Rider Series, there are Riders that have forms that don't exactly fit into Main Form, Super Form, or Final Form categories. They are scarcely-appearing forms, often borne from a Rider using devices in unconventional ways (such as using those of another Rider, or using combinations not normally used).

Kamen Rider Den-O

Kamen Rider Decade

Kamen Rider W

  • Kamen Rider Accel
    • Yellow Signal Version (Part of the transformation into Trial form)

Kamen Rider OOO

  • Kamen Rider OOO
    • Takapanba (Ganbaride-Exclusive)
    • Puudol (Net Movie-Exclusive)

Kamen Rider Fourze

Kamen Rider Gaim

Kamen Rider Ghost

Kamen Rider Ex-Aid

Kamen Rider Build

  • Kamen Rider Build
    • PhoenixRobo Form
    • SmaphoWolf Form
    • RoseCopter Form
    • ToraUFO Form
    • KujiraJet Form
    • KirinCyclone Form
    • SameBike Form
    • GoldScorpion Form
    • HachiMarine Form
    • SaiDryer Form
    • SpiderCooler Form

Kamen Rider Zi-O

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