Chances are Drive, Chaser, and Mach will be the only riders in the show.

Assuming Chaser is even a rider, of course.

In the show yes, I think we'll get more in movies like Lupin but yeah I don't think we need more besides Drive, Chase, and Mach. I think Chase will take a face turn soon when he finds out more about his past.

Just read an interesting conversation on Twitter. Someone sent Takayuki Tsubaki, the actor who played Blade, screenshots of Blade and Garren with broken helmets and he retweeted those. Then Ryoma Takeuchi, the actor playing Drive, answered that he thought it looked really cool and how he wished he could also have a scene like that, with Tsubaki-san responding how he'd also think it would be awesome to have that in Drive.

A dramatic scene where Drive's helmet is destroyed? Sounds good to me. Hope that Takeuchi-san will get the chance to have a scene like that.

Man such a scene would be killer. Type Speed is awesome enough as it is but a broken helmet version? Yeah that would be the best thing ever.

But will we get a figuart of it? :)

So after watching the Episode 0 raw, I am like 99% sure that Chase is Proto-drive now. The voice and personality are practically the same.

I don't even think they're trying to hide it......the fact they used Chase's actor as Proto-Drive's VA and the on-going "internal struggle" of Mashin Chaser in the actual show basically says it

I'm still wondering what's the connection between Chase and Proto-Drive... I don't know if he is Proto-Drive or if he isn't.

I feel like Proto-Drive being voiced by the actor who plays Chase is a pretty clear indication at this point. All that's left is an explanation and what happens next. Although they could still throw us a curve-ball.