Zachary had a Yanma, who often caused trouble in town by sending shockwaves to shatter glass. The citizens were displeased, so by his father's order, he had to release it. Team Rocket saw the Yanma's capabilities, so they devised a plan. Meowth used Yanma to shatter glass, while Team Rocket sold windows to the people, though the windows were actually ice blocks. The citizens saw they were fooled, so accused Zachary to be a part of the plot and took him to his father. However, they saw Yanma was being used and forgave him. Zachary learned the shockwaves can be controlled with a move known as Sonic Boom. With that, Yanma defeated Team Rocket and controlled its power.