vermilion city once you've beaten the pkmn league. take the ss aqua from olivine to get there.
In the gym!
in his gym
fail...
blackthorn
move to the 8th gym
go to the Pokemon gym
He is on Cinnabarr Island.
The fourth gym leader in Pokemon Soul Silver is in Ecruteak City.
Ghost Pokemon.
With your pokemon... noob
same way you get in
you dont