Board Thread:Questions and Answers/@comment-38947763-20190921181204/@comment-38952966-20200523090803

DirePresent wrote: " it's very probable that Ball Breaker isn't his stand. It's not really a part of him" · So what, Anubis sword wasn't a part of the body of its original owner, Surface isn't a part of the body of Hazamada. It's a matter of the stand bounding with an object. Gyro managing to use Ball Breaker by mastering the Spin doesn't mean it's not his stand.

Steel Ball Run and Jojoveller describe Ball Breaker as the "power of the Steel Balls" rather than Gyro's power. It also would be odd for Gyro to need to perform the Super Spin to summon his own Stand. While it's possible that Ball Breaker was born from Gyro's mastery of the Spin (like Tonio's mastery of cooking unlocked Pearl Jam) it seems more likely from context clues that Ball Breaker is just another form of the Spin, manifested into the form of a Stand.