I think, shadow moon could be considered the first metal rider.

Does anyone have any idea where the term "Driver" comes from? Most Kamen Rider transformation items these days have Driver in the name but I don't think I've ever heard anyone question what it means exactly.

This definition from dictionary.com seems to be the closest.

"Computers.software or hardware that controls the interface between a computer and a peripheral device."

What if we have a KR called Zeo.

From what I know, the term was first used in Faiz, to describe the belt, which works pretty much exactly how Sunred describes it - an interface between the Faiz Phone and the suit. Decade re-used the term for the DecaDriver (and then the DiendDriver too), but that could either be from the same route, or as a call back to Faiz. Double used it, almost certainly out of tradition at this point, and its been the same ever since, with only a few exceptions (the Megauloader is the only one that springs to mind right now)

We already do, depending on how you pronounce Kamen Rider ZO.

How simple. Thanks.

When they started using it since Faiz I didnt really think much of it but with this definition I think it does justify the usage of the word somewhat since the belts can be considered a computer/control unit and the collectibles the peripherals in a sense. Whether that was the intention we will never know but I like to think it does factor in be it intentional or unintentional.

He's pronunciation is Zetto.

I know the bugsters are video game antagonists, but that still doesn't tell me what Loverica is suppose to be. What is he!? And how does a dating game have a villain anyway?