It is in the Seafoam Islands. You have to go up the ladder in order to get to Blaine's gym. Do not go down the stairs. That is where you catch Articuno.
nothing, that is the 16 gym the 15 gym is at seafoam islands
there is no 9th gym
Battle Chuck 15 times in a row,then go to his gym
You CAN NOT become a Gym Leader in Pokemon HeartGold and SoulSilver or ANY MAIN SERIES POKEMON GAME.
Well after you defeat 15 gym leaders in Pokemon HeartGold / SoulSilver go to Cinnabar Island and talk to Blue.
walk in
The gym is in Blackthorn City.The gym leader is Clair.
In Pokémon HeartGold, you can find the 3rd Gym Leader in Goldenrod City.
He has many types.
awww by beating the 7th gym
try beating the gym leader
its in azalea town