Blue (Master ventus)

Blue Oak  is the main rival to Andy during the Kanto Arc, and beginning of Hoenn Arc. He is the grandson of Professor Oak and a former Pokemon trainer, after the Battle Frontier he decided to take over the Viridian City Gym. During the Hoenn Arc he is on his way to the Sootopolis City to earn his last badge when he runs into Andy at Littleroot Town, he decides to travel with Andy and May since they are all going to the same place. Pokemon