Good. Nice to see he hasn't run out of gas yet.

So from the chart is:
Drive type: speed, wild, and technic -> Mach -> Drive/Mach Deadheat -> Drive Formula -> and Drive's final form: OverDrive(?)

I believe that's the gist of it.

Or what if he becomes the final villain of the show similar to Baron in Gaim?

I can't believe Chase is a roidmude with a number code 0. Here I thought Proto-Drive was altered by Heart & Brain to become Mashin Chaser.

I hope Mach and Chase duke things out on their bikes and go for a shootout.

Wonder more about "Medic", the female Roidmude. Her evolved form isn't revealed yet. But wonder if Gou would interact with her somehow.

Speaking of Medic, Heart and Brain. They represent the human heart and the human brain, while she represents medical treatment.

These three are body, mind and spirit. It's just a theory.

Wow, I never expected chase's roimude number to be 000. Does this mean he was the first ever roimude in existence or just a prototype? Of course it does but still chase's history has become even more mysterious than it already was.

Was it ever confirmed that proto-Drive's user was human in the first place? Maybe one of the conditions regarding the drive's proto system is that only a roidmude could use it...

haha what if Shinnosuke turned out to be a roidmude that forgot he was one.

I'm thinking 000 is the proto-type roidmude. Remember Mr. Belt said the roidmudes killed their creator. 000 could have escaped harm, found Mr. Belt and became proto-Drive. I believe The roidmudes like the shift cars were designed to aid humanity as reflected by Chases actions up to this point. It's also possible that 000 has never seen his true form (he could gave given a human form prior to activation) or had his memories erased by brain (only saying him since he's the tech guy among the big bads). I'm saddly calling Hearts demise within the next several episodes since he has that overheating problem and named dropped Deadheat in relation to it and with Mach coming next episode.

Why do people think Gou might interact with Medic?

Why a human being would fall in love with Robot that trying to destroy Humanity?

This so outrageous since people want Nossan and Candelilla to be couple!

What is this? Interspecies romance from TV Tropes?

It like saying Shinnosuke and Kiriko will become couple at the finale episode of Drive!

Why Gou want his older sister to have a relationship with Shinnosuke? Why?

Could be a thing since they were introduced in the same episode (yes both were brief; Mach being nothing more then a tease). Question is Medics wardrobe color black? hard to tell from the lighting but if it is then we have one main villain to color match each of Drives 3 forms.... food for thought.

Yeah I agree with your theory. I definitely feel Chase is both the Prototype to Drive and the Roimudes. I also feel that Mr. Belt has seen Chase in his 000 form before because he finally recognizes him and has not seen his human form before. I also agree that Heart will be defeated soon because of that Deadheat mention too.