evolve it by trading it with another player
To get a Gengar, you must trade a Haunter and it will then evolve into a Gengar.
You can't catch bastiodon in Pokemon soulsilver.
Yes into haunter and then trade to get a gengar
Gengar can only be obtained by trading a Haunter.
There is no place that you can catch a Gengar and he can only be obtained by evolving Haunter via trade.
You'll need to trade for a Haunter or a Gengar in the GTS or from someone.
catch it? no.
You cant. You have to catch a gastly then envolve it to haunter then trade with someone and trade back haunter will envolve to gengar!
No, you can not catch Phanpy in SoulSilver. It is a version exclusive to HeartGold.
You cannot catch Heatran in Pokémon SoulSilver, you will have to trade for it.
you can't catch a gengar. you catch a haunter then trade it so it evolves. make sure its not holding an everstone. ;)
You cannot catch Celebi in Pokemon Soulsilver, you have to transfer it from Diamond and Pearl (if you have it in those games).