Yoshiro is a very quiet, nonconfrontational Pokemon trainer who follows Shigeru around. He's very distant and doesn't like to talk about himself or past. apparently has no last name and prefer to be called Yoshi-kun. He's very good at Pokemon training but hardly ever battles. He owns a Charizard named Fireball or Hitama. Shigeru has to stand up for him all the time because he won't do it for himself. He also tends to blush... alot.

He was born on a small island with little to no influence from the outside world. Most of the people of this island don't associate with outside forces. This mixed with Yoshi's general shyness, cautousness and intutition making him almost appear mute. He only speaks with Shigeru who was his first friend on the mainland. Besides that Yoshi's past is a complete mystery.