Pikachu's trainer is ASH, a three-letter name. ASH is the main character of the popular anime series, Pokemon. He is a young boy from Pallet Town who sets out on a journey to become a Pokemon master. ASH is accompanied by his faithful companion Pikachu, a yellow electric mouse Pokemon. Together, they travel the world, battling other trainers and collecting badges. ASH is determined to become the greatest Pokemon master of all time.