Gyro Zeppeli/History

History
Gyro lived a roughly normal life until his late childhood, upon which he was trained in the arts of the steel balls by his father. In his late teens, he became a skilled executioner, though the Zeppeli family posed as renowned medical doctors on the surface.

However, this is not to say that Gyro killed entirely according to orders, discarding his father's prohibition on sentimentality on some occasions. One incident resulted in the arrest and death sentence of an innocent little boy who made a living from cleaning shoes. Gyro was devastated when he heard of this and became conflicted when the boy offered to clean his own shoes, and ended up pleading the king for an appeal. The king then agreed that Gyro would receive an amnesty to release the boy if he could complete the Steel Ball Run.

Steel Ball Run
Shortly after joining the race and before it begins, Gyro goes into town where he fights a man using his 'Spin' and steel balls as weapons. When the paraplegic Johnny Joestar touches one of Gyro's spinning orbs, it causes his paralyzed legs to move for a moment. Gyro attempts to convince Johnny that it was simply a reflex of his legs but Johnny isn't convinced, joining the Steel Ball Run race to follow him in order to learn about the Spin and how to move his legs once again.

During the start of the race, Gyro quickly gains the upper hand. He then meets Dio, a genius jockey who becomes his main rival during the race. Using his iron balls, Gyro attempts to finish the first leg of the race in first place to win a high amount of points. However, Stephen Steel reduces Gyro's points for using an "unauthorized weapon" against the barefoot runner "Sandman".

In the final battle against Funny Valentine, Gyro uses the most advanced technique of the Golden Rectangle: the "Super (or Cavalry) Spin", which is created by invoking the golden rectangle while riding a horse to gain momentum. By combining this technique with his newly developed stand Ball Breaker, his attack becomes very powerful. Although his technique is very effective, it is not enough to beat Valentine, who resists his injuries long enough for Gyro to die from his own wounds. However, before dying, Gyro gives his last lesson to Johnny, allowing Tusk to reach level 4 and giving Johnny the power to defeat Funny Valentine.