[NeonZ]

There is probably a third Rider called "Phantom Build" too. It appeared in a list of Build Riders in the official site right bellow Metal Build.

https://www.kamen-rider-official.com/columns/4

Quote:

Originally Posted by henshinzero

Yawn! I was hoping for a Sclash Driver user. Once again they flop and rehash the same costume pieces. No originality!!!!

More Sclash Driver Riders or forms are impossible. The belt only had the sounds we saw in the series and didn't even have blank sounds (so new bottles couldn't just play their own sound since it'd clash with the Driver). That's why all upgrades for the Sclash Driver Riders had to return to the Build Driver.