The Fighting Dojo is to the left of the official gym in Saffron City. For the record, the Fighting Dojo isn't an actual gym, and you don't fight anyone there - you do get a Focus Band, however.
He's not really a gym leader in the sense that he won't give you a badge. He is located in Waterfall Cave (near Mahogany Town) and will give you a Tyrogue after beating him.
you have to go to every gym in kanto a beat all the gym leaders
you have to meet gym leader from kanto in Cinnabar island
The Seventh Kanto Gym Is At Seafoam Islands you get there from pallet town so go around that way hope it helped ;)
After you defeat all 16 gym leaders, you can call them to arrange a rematch through pokegear in fighting dojo in saffron city(kanto). See related link below to get gym leaders phone numbers and when to call them.
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!
You need to have defeat the other gym leaders of Kanto first, after that you will find Blue on Cinnabar Island, talk to him and he will return to his gym.
Because Misty is not at her gym, you have to find her up at Route 25.
You go to the Cerulean Cave after beating all eight Kanto gym leaders.
Actually you can face off against Both Kanto and Johto Gyms again once you've defeated Red ask for their Phone Numbers in the areas you find them, notice they won't be in their Gyms they will be somewhere in either Kanto or Johto Kanto gym leaders can be found somewhere in Kanto while Johto Gym leaders can be found in Johto Areas you can only battle them on certain days not at the same time and you go to Saffron city in Kanto and the fighting Dome for rematches.
Blackthorn city, in kanto you find him at cinnibar island show him your 7 kanto badges to make him go back to the gym then you can battle him.
Beat the Elite four once and you will be able to go to Kanto. First, you'll end up in the third gym leaders town when you arrive. Explore Kanto and you'll get to the FIRST gym in no time. The first gym is Brock who uses Rock types
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.
a city
On the 1st gym of kanto
The last Kanto gym is in Varidian City.
normally the fisrt kanto gym is pewter city but when you first get to kanto it is possible to go straight to the virmilion gym where you get off the ferry.
After you beat the other 7 kanto leaders you will find Blue in the rubble of Cinnebar Island. Talk to him and he will return to Viridian Gym, then you can go battle him.