A. Jirobo was a shinobi of Otogakure, also known as the Village Hidden in the Sound. He was a member of the Sound Four, a group of powerful ninjas serving Orochimaru, one of the primary antagonists in the series. Jirobo possessed exceptional physical strength and is known for his large build. He specialized in earth-based jutsu and is recognized for his ability to manipulate rocks and use them as weapons.