If KR did crossovers outside of tokusatsu....
 

What show would you all want the kamen riders to join in?

Like remember when Marvel heroes teamed up with Phineas and Ferb?

Hmm not sure, although I would love to see some armor and weapons from Kamen Rider in Monster Hunter. The more I think a about it, the kooler it sounds xD

Decade X Doctor Who!

Both are passing through helpers that get into some crazy shenanigans.

Kamen Rider in Tiger & Bunny.

Drive X The Flash, I watch both shows right now and my Head canon is the Slowdown was caused by the giant reactor from the Flash. Shinnosuke and Barry would be so much fun.

Kamen Rider Ryuki x The Hunger Games

Kamen rider Gaim x Highlander
Kamen rider Wizard x Doctor Strange

Decade x Ben 10 (Had this idea years ago)

Matrix is about to post.
Gee, I wonder what his idea would be.
Clearly it'd be Kabuto x Iron Man.

But seriously, give me SD Riders x My Little Pony.

Kamen Rider x Godzilla: Battle of Titans

Kabuto in Sword Art Online. That would be sick.

I don't feel like they'd make a whole lot of sense. Language barriers & live-vs-drawn being my main issues. I don't think anything else fits besides J-Dramas & I haven't seen enough.

G3-X & Robocop vs Terminator.
Blade & co. vs Royal Flush Gang.
Ryuki vs Mirror Master.
Kiva vs Morbius.

Kamen Rider W and Drive × Batman

Kamen Rider Den-O Crayon Shin-Chan, and Fourze Crayon Shin-Chan, both say Hi.

Drive X Saints Row because I think it would lead to crazy shenanigans :lol

I can't hear you over the sound of the entire Showa line up getting an animated comedy special.

Shelock Holmes & Watson x Kamen Rider W
Kamen Rider Drive x Hercule Poirot

So far I have:
-Kamen Rider Den-O × Doctor Who (because wibbly wobbly timey wimey... stuff.)
-Kamen Rider Blade × Yu-Gi-Oh 5Ds (because *ahem* Card games on motorcycles!!!)
-aforementioned W/Drive × Batman crossover
-Kamen Rider Kiva × Supernatural
-Kamen Rider Fourze × Space core from Portal 2 (Spaaaaaaaace kita!!!)
-Kamen Rider Wizard × Full Metal Alchemist
-Kamen Rider Gaim × Puella Magi Madoka Magica

I can't believe you guys haven't hit upon the one that's most likely to happen.

Kamen Rider x Precure All-Stars!

Even Decade wants to see it happen!

This is also a better fitting crossover then you might think. Remember the giant tablet that fell out of the sky at the beginning of 5Ds season 2? Blade also has a mystical giant tablet

How about OOO & Pokemon?

Kamen Rider Decade x My Little Pony: Friendship is Magic. :D

Shin Kamen Rider X Predator. Who will rip out each other spines first?

Kamen Rider Gaim X Madoka Magica

That's funny. I read a fanfiction with Madoka becoming Gaim. It's called 'Kamen Rider Gaim Magica' by a Fanfiction author named Pega-Rider. You should check it out. It's a good read. :)

Kamen rider fourze x Ben 10 omniverse

Alien hero kitaaaaaaaaaaa!! :D

Fourze X My Little Pony: Friendship is Spacetime.

Ponies kitaaaaaaaaa~!! :D

Kamen Rider Knight x Batman

http://img1.ak.crunchyroll.com/i/spi...15692_full.jpg
(Yes, it is a doujin manga. Look it up and see for yourself. :p )

Agito and the X-Men. An Agito (I'm thinking the female Agito, Kana, from the end of the show) is taken over by the Phoenix Force and it's up to Agito (Shouichi) and the X-Men to save her. Subplots include Gills fighting Wolverine over a misunderstanding and Beast helping the G3-X team solve a mystery that threatens the city. One time power ups are the X-Men receiving the evolution of Agito and getting their own Rider forms.

Think about it...

http://img3.wikia.nocookie.net/__cb2...lutionLogo.jpg

Kamen Rider Ouja x Superior Spiderman

Funny. Exactly had an idea for a Kamen Rider x RWBY crossover thingy. It was going to feature an OC person as Kamen Rider Kuuga, already being incorparated in the RWBY universe, being a new student at Beacon Academy and meeting Ruby, Yang, Blake and Weiss and you know, Team JNPR, etc. and he was going to be paired up with Ruby or Yang... :lol Yeah, but I don't think I could write that too good...