Cross Fire

Cross Fire (クロスファイア) was the title of one of Shotaro Ishinomori's series concepts which eventually evolved into the original Kamen Rider. .

Creation and Concept
After the Kamen Rider Skull Man plan was failed, Shotaro was forced to create a a new character. The concept of Cross Fire was a superhero wrestler with a red cross-shaped visor on his mask. It is said that was inspired from the Toei's hero and the motorcycle racer.

The Cross Fire has several concepts, such as Skull Man K (スカルマンK), Kamen Angel (仮面天使) and the Cross Kamen (十字仮面).

Kamen Rider
Like Skull Man, despite Cross Fire never making it as a series, elements of the costume's design and concept would be used years later in Kamen Rider Series and another series hero, Zubat.

Something in the Kamen Rider Series were created as homages of Cross Fire:
 * SPIRITS soldiers' armor - Kamen Rider Spirits manga
 * Cross of Fireconcept - Kamen Rider Wizard
 * Kamen Rider Mach's V-Helm - Kamen Rider Drive