its actually the 8th gym so you need 7 badges and then it will unlock
You have to get Kyogre and then go to the ciuty it is in and got to the chamber.
you need to look in the trash cans. one of them might have a switch
In the 8th gym. he is the gym leader
In Pokémon Yellow, the 8th Gym Leader, the Viridian City Gym Leader, Giovanni's Pokémon are Persian, Dugtrio, Nidoqueen, Rhydon and Nidoking. Persian is at Level 53, Dugtrio at Level 50, Nidoqueen at Level 53, Nidoking at Level 55 and Rhydon at Level 55.
awww by beating the 7th gym
its actually the 8th gym so you need 7 badges and then it will unlock
Giovanni
In the toliet
Go through the cave of origin.
Find the key at a under water cave
You have to get Kyogre and then go to the ciuty it is in and got to the chamber.
the 8th gym leader in sunyshore city. to unlock it cath palkia or dialga.
viridian city gym. you have to beat all the other seven gyms to unlock this one.
Dugtrio, Rhydon, Nidoking, Nidoqueen, Rhyhorn.
You have to beat all of the other gyms otherwise it's impossible.
there's a key in the pokemon mansion, that you'll need to unlock te gym's door. after that, just use the quiz blocks next to the trainers to get to blaine.