Its giovanni.
Spoiler Alert!
You have to beat the other 7 gyms in firered then the old man guarding the 8th gym is unlocked and you may battle Giovanni
go to cinabar island and you will see blue (gym leader) he will tell you that he wants to fight you in his gym and leaves.
go to viridian city and go to the gym the man outside it will have moved go inside and kick sum butt
In Pokémon HeartGold, the Viridian City Gym Leader, Blue is on Cinnabar Island however you need to beat all of the other Gym Leaders in Kanto before he'll return back to his Gym. After you have defeated Brock, Misty, Lt. Surge, Sabrina, Erika, Janine and Blaine then you can go talk to Blue on Cinnabar Island and he'll return back to his Gym which will allow you to go into the Viridian City Gym so that you can challenge him.
You have to beat all the other gyms first then you can enter. The viridian gym is the last gym.
you have to get the 7 badges then you go to the gym
well you have to go through diglets cave and when you come out go derectly down. when you can't go down any farther use cut on the tree on the left.then you should be in viraidin.
Simply get all 7 badges and walk up to the door.
The Viridian City gym is the last gym, so you need to beat the other 7 gyms before you can get inside. The Gym Leader is (WARNING SPOILERS) Giovanni, the leader of Team Rocket
You need to beat the other seven gyms of the region first. Viridian City's gym is the last gym in Kanto.
FR/LG: Defeat Team Rocket and have 7 gym badges.
HG/SS: Talk to Blue on Cinnabar Island who will then leave and go to the gym. Have 15 gym badges.
The Viridian Gym (which is the 8th). beside that, there is the Pewter Gym, found above Viridian, after the forest.
Conquer the other seven Gyms, and then you will be able to battle the Viridian Gym. Its specialty is Ground-Type Pokémon.
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.
viridian city
Defeat every other gym. The Viridian City gym is actually your last gym, not your first.
The Viridian Gym (which is the 8th). beside that, there is the Pewter Gym, found above Viridian, after the forest.
The 16th gym is the Viridian City Gym.
Go to viridian city and go to that gym Go to viridian city and go to that gym
Viridian gym i forgot his name the team rocket boss guy.
Conquer the other seven Gyms, and then you will be able to battle the Viridian Gym. Its specialty is Ground-Type Pokémon.
Blue, the Viridian gym leader(looks like your rival for Pokemon FireRed/LeafGreen), is on Cinnabar Island. Talk to him and he'll say a few things, then go to his gym in Viridian City.
Viridian City.
Viridian city.
Blue
He won't be in viridian at first he will be at cinnibar island if you talk to him he will go to the gym in viridian city go to viridian city to battle him.
The final gym is the Viridian City Gym. Blue is the Gym leader.