The viridian city gym leader happens to be the leader of Team Rocket if you can foil his plans everywhere he brings team rocket (game corner, silph co, Pokemon tower, mt moon) and get the 7th badge you will be able to challenge him at the gym.
Well after you defeat 15 gym leaders in Pokemon HeartGold / SoulSilver go to Cinnabar Island and talk to Blue.
you have to get all of the other gym badges in kanto and then go to Cinnabarr island and talk to blue. then go to viridian city and go in the Pokemon gym!
In the beginning of the game, he isn't there. Towards the end, you will find his rival on cinnabar island by himself. After you talk to the rival, he leaves to go back to viridian. Fight the cinnabar gym leader, go back to viridian and the gym leader should be there. The man you talk to on Cinnabar Island Isn't the gym leader, but his rival. After you speak with his rival on cinnabar, the gym leader reappears in viridian. You have to fight and beat the cinnabar gym leader first.
ponie
put geodude as the party leader
Gym Leader Blue
He has many types.
You CAN NOT become a Gym Leader in Pokemon HeartGold and SoulSilver or ANY MAIN SERIES POKEMON GAME.
defeat gym leader.
Cinnabar Island.
He is the Gym leader in viridian city
you don't get to be. whoever told you that is daft.
misty will be a gym leader in HeartGold and SoulSilver
u have to go to cinnibar and talk to gary, he will ask you a few things and challenge you, go to viridian an he will be there
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.
Red is at the top of Mt. Silver. Blue is the Viridian City Gym Leader.
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!