Viridian City, Giovanni(Team Rocket Leader) is the Gym leader.
Brock.
Blue (The eighth gym leader) is waiting on Cinnabar. He won't battle you unless you've beat the rest of the gym leaders
He is the Gym Leader in Cinawood.
in blackthorn city
defeat gym leader.
Cinnabar Island.
yes, and you have to battle her to get your 16th gym badge
Blue can be found at Cinnabar Island. You have to defeat the other 7 Kanto gym leaders before you are able to battle him.
His name is Blue, and he is on Cinnabar Island. Show him the other 7 Kanto Badges and he will go to the Viridian City gym. Then, go to Viridian City and battle him at that gym.
He is the Gym leader in viridian city
go to cinibar iland and go by the Pokemon center and you will see a gey. talk to him he will leave. then fly to viridian city. GOOD LUCK!
Gym Leader Blue
Firstly, have to defeat the 7th gym leader. Then you go talk to the trainer next to the Pokemon center on Cinnabar Island. He is the 8th gym leader of Kanto, Gary. Gary is in Viridian City.
In HeartGold and SoulSilver Versions, Blue is Red's rival, and the gym leader of Viridian City. You can only battle him when you obtain all of the Kanto badges, he is found on Cinnabar Island.
In the original Silver game, the gym leader was Blue and you would find him at Cinnabar island. After meeting him there, you can go back to the gym and fight him.
Viridian gym i forgot his name the team rocket boss guy.