To get to Misty you have to go to the Power Plant and fix the thing up there. Then you go to Bill's grandga's house and if you go past his house you will find Misty and her boyfriend.
And as for Erika she is already there.
Grass that's Erika's gym
You have to beat the first 3 gyms in Kanto before Erika will be in her gym. Erika's gym is the fourth in the series.
The answer is... No there are no and i repeat NO hidden gyms on Pokemon soulsilver (but there are more gyms in kanto which you can get to by the boat pass from prof elm after you defeat the champion)
yes
Go to Kanto, beat the gyms, go to Mt Silver and beat Red.
Gold, Silver, Crystal, HeartGold, and SoulSilver Versions. They all have 16 gyms (two regions).
To get to Mt Silver you have to defeat the Pokemon league and all of kanto's Gyms.
1- Pewter city's BROCK 2- Cerulean city's MISTY 3- Vermilion city's LT.SURGE 4- Celadon city's ERIKA 5- Fuchsia city's KOGA 6- Saffron city's SABRINA 7- Cinnabar Island's BLAINE 8- Viridian city's GIOVANNI 9-12- Pokemon League's ELITE 4 13- Pokemon League's CHAMPION
You have to beat all 16 gyms.
He is inside Mt. Silver which you can reach after beating all 16 gyms
Just beat all the gyms. The first one is in Violet City
GO to the top of mount silver and beat trainer red