Sayer is a minor character from Pokémon Diamond and Pearl: Galactic Battles.
Sayer first appeared in Strategy Begins at Home!, where it’s revealed that besides being the manager for the Twinleaf Festival, he also employed the Team Rocket trio (Jessie, James and Meowth) to catch Goldeen for the Goldeen Scoop game.
At the end of A Faux Oak Finish!, Sayer is heard yelling at Jessie, James and Meowth after James falls out of a tree.
In Historical Mystery Tour!, Sayer tells Brock that a stall’s vendor had become ill, so he asks Brock to fill in, and Brock agrees.
In Challenging a Towering Figure!, Sayer is seen telling Team Rocket that he is very pleased with all the business. He then says he will give them the profit (while adding that they could buy a rocket with the money), making them proud.