Not enough info: which gym leader?
he is Brock. hes in pewter city.
johto and kanto
Yes it is in the kanto region.
To get a Pikachu in Pokemon SoulSilver, you must go to Viridian Forest, which is in the Kanto region.
You can only go to Johto and Kanto in Pokemon Heartgold and Soulsilver
Janine I think
in the kanto region you have to surf a long way then you will be there
misty
it depends if you have been to the kanto region
Route 25 in the Kanto region.
You beat the 6th gym leader.
You will arrive in Vermillion city after from Olivine. Lt. Surge, the electric gym leader, is here.