johto and kanto
Johto
To get a Pikachu in Pokemon SoulSilver, you must go to Viridian Forest, which is in the Kanto region.
Johto.
No
You can't.
No.
To catch Pikachu in Pokemon SoulSilver, you must go to Viridian Forest in the Kanto region and search in the grass. They are a bit uncommon, so it may take a while.
You can only go to Johto and Kanto in Pokemon Heartgold and Soulsilver
there is not a new region its in johto
You cannot go to the Sinnoh region in "Pokémon HeartGold" and "Pokémon SoulSilver."
the powerplant
Yes it is in the kanto region.