Animals and I know that ooo had animals as one of its motifs but I mean like the rider(s) are based off of actual animals. The main one could be cats, tigers lions etc and the secondary one could be birds.

Any idea for how a kamen rider to face off against a group of kaijin who are based on the Arcana major?

*looks at Zero* Going to need a little more info than that bud. I'd love to help you with it.

Well think of it this way. In Kiva, there are the Checkmate Four, who are based on chess pieces.

In Blade, the riders and cards are based on the arcana minor (swords, coins, cups & wands).

So now.... question is... for the major arcana, if they were kaijin which type of rider series would these fit in?

Here are also the dinosaur & ninja rider ideas:

Dinosaur Rider & Prehistoric Beast Rider vs other dinosaurs & kaiju.

Yokai Ninja Rider & Yokai Monk Rider vs Shadow Oni

I'm partial to the Dino Rider set. I've been contemplating it for a little while. Care to carry this conversation on in Visitor Messaging or PM?

How about PM? Maybe I could use your help.

Lets go for it then. ^_^