the 6th gym leader will be jasmine in olivine city but u have to beat chuck, the gym leader at cianwood city and get the secret potion from the pharmacy there, have her cure her ampharos and she will go back to her gym
note: she has 2 lvl 30 magnemites and a lvl 35 steelix
The fourth gym leader in Pokemon Soul Silver is in Ecruteak City.
Ecruteak City
The Gym and Gym leader is in the bottom left of the city near the Pokemon center.
The last gym is in viridian city
Morty is the Gym Leader of the Ecruteak City Pokemon Gym.
The first Gym Leader who is Falkner, the Violet City Gym Leader, he has a Pidgey and a Pidgeotto.
Olivine City
in viridian city
In Blckthorn City
Yes.
Cinawood City.
He is the gym leader Viridian city