You have to beat all other 7 gyms then go to Cinnabar Island and talk to Blue then he will go to his gym in Viridian. He is the eight gym.
Good luck.
i think its the rainbow badge from erika in celadon city
you beat the Johto elite four first.
You go to the dragons den behind the gym.
You have to beat the eighth gym leader to get to the Elite Four. Without defeating the eighth gym, you cannot get the S.S. Aqua ticket. You also cannot capture Lugia without the eighth badge.
The 8th gym leader is currently away from his gym at viridian city, and is at Cinnabar town, and will only challenge you once you have 7 kanto badges. You will have to surf there, and he will be the only person there on the island. Once you talk to him, he will go back to his gym. Hope this helps!
The boulder badge, the cascade badge, the thunder badge, the rainbow badge, the soul badge, the marsh badge, the volcano badge and the earth badge.
You have to beat the elite four then go to Kanto and beat all of their gyms to use rock climb.
SHE IS AT THE END OF HER GYM WHERE DO YOU THINK SHE WOULD BE! Unless you mean the eighth gym in kanto. He will be in cinnabar island talk to him after you beat every gym leader in kanto expect blue himself and he'll be in the gym in viridian city
you have to use the HM surf and surf behind the gym and go in the cave. go to the other side of the dragon temple and go in. awnser the old man's questions and the gym leader will come in and give you the badge. This is to get the 8th Johto gym badge. To get the Kanto one search: how do you get to the 8th Kanto gym badge
It is to the east of Johto, west of Kanto
in the kanto
you have to beat jotho then kanto