Note : (Like other series it had released pretty soon after OOO series had ended airing.)
On OOO Side.....
Kamen Rider Poseidon through a trio of marine life-themed Core Medals.[2][3][4] With the destruction of all of the original Core Medals, Eiji HIno must find a way to defeat Kamen Rider Poseidon without the ability to transform into Kamen Rider OOO and without Ankh at his side. Miharu Minato is portrayed by guest star Atsushi Arai of D-Boys.This Kamen Rider Was Seen Attack Birth for his first appearance
Will be a Foe or Ally?
Fourze Part....
In the Kamen Rider Fourze part of the film, Gentaro Kisaragi falls in love with transfer student Nadeshiko Misaki (美咲 撫子 Misaki Nadeshiko). However, she can transform into Kamen Rider Nadeshiko (仮面ライダーなでしこ Kamen Raidā Nadeshiko) with abilities similar to Kamen Rider Fourze.[2][3][4] Nadeshiko Misaki is portrayed by guest star Erina Mano of Hello! Project.[
Source:Google,Wikipedia
