Pierce was first mentioned in The Bloom Is On Axew! as to have been sent by Giovanni to help Jessie, James, and Meowth on a mission. In A Rival Battle for Club Champ!, Jessie, James and Meowth are intercepted by Officer Jenny and backup, Pierce comes in, driving a truck and the trio get in. Officer Jenny and the police follow when a half-constructed road appears and the police are forced to stop. The truck still pushed on: it drove past the point where there was any road at all and was toppling down into the ground below and exploded. Luckily the group were safe with jetpacks, and Pierce gives them a briefcase and flies off.
Crossover War Heroes Series[]
Crossover War Heroes: Iron-Blooded Kid Warriors[]
After the events of Pokemon, Pierce gets recruited by Gjallarhorn. He appeared as one of Prozen's minions, the remnants of Team Rocket. He and the villains were tasked to serve their master in order to kill Yuinshiel Asteria, Marika Kato, and many heroes. When the meeting was done, he and the villains were set off to fight back against heroes in order to do so. He was attempting to kidnap many young heroes who are boys. Suddenly, he met his demise by the hands of Milinda Brantini and the heroes before he and the villains were crushed by the London.