To get the 8th Gym Leader to return to his Gym in Viridian City, you must defeat all 7 other Gym Leaders.
The eighth gym leader is in the underwater city(forget the name) but it is where you fight groudon. after you beat him the gym should be open.
Blue (The eighth gym leader) is waiting on Cinnabar. He won't battle you unless you've beat the rest of the gym leaders
8th Gym Leader: Claire8th GYM Leader is Claire of Blackthorn City. She uses dragon Pokemon. Yes indeed Claire is the 8th gym leader in gold/silver/crystal and she uses dragon type Pokemon just like lance
The eighth gym leader of Sinnoh, Volkner, returns to battle you again in Platinum after you beat the Elite Four. When you get to battle frontier, you and your rival have a double battle against Volkner and Flint, an Elite Four member.
The eighth gym leader is Claire in Blackthorn City
The eighth gym leader is in Viridian City. It is the team rocket's leader!
The 8th gym leader is in Viridian City.
Defeat the eighth gym leader.
The 8th gym leader is in sunny shore city
The eighth Gym Leader, Juan, can be found in the Sootopolis City Gym after you have dealt with Teams Aqua and Magma. He trains Water-type Pokémon.
You have to face the Elite 4 after you beat the eighth gym leader. The game gets a little better & less boring when you do.
The 8th Gym Leader in Pokémon Black 2 is Marlon, he's the Gym Leader of Humilau City.
Gym leader Volkner (I think that's his name) the master of electric types
The 8th gym leader is Drayden he uses Dragon type pokemon
The 8th Gym Leader in Pokémon Black 2 is Marlon, he's the Gym Leader of Humilau City.
To get in the 8th gym you have to go find the gym leader in the light house.