Thread:Violet Fog/@comment-27659575-20170120192546/@comment-32788838-20170120225040

It's not his Stand. It states very clearly that Ball Breaker is a product of the Super Spin and this is also told through the visuals in the Gyro vs. Valentine fight; it is a byproduct of the technique, a manifestation of the power produced by a Steel Ball when thrown in conjunction with the Golden Rectangle emulated by himself and his horse.

In this sense, it is not Gyro Zeppeli's Stand; it is a Stand used by Gyro, but belongs to the concept / idea of the Spin technique. And this is made especially prominent given the fact that Ball Breaker appears out of the enhanced Steel Ball rather than Gyro himself as he throws it.