in the Pokemon tower in lavender town
You evole haunter by trading it with a friend :D
you have to traid a haunter
You can trade it to a friend.
Trade A Haunter to Another Game
No you must trade from FireRed and LeafGreen
To get a Gengar you must first catch a Haunter. To evolve the Haunter you have to trade it to another gaming system.
Haunter is a ghost type of Pokémon. The last move that it learns in Pokémon LeafGreen version is Mean Look.
Get a link cable and trade/receive a Haunter.
You mean how you get Gengar then train a gastly to level 25 it will evolve to Haunter then trade to a friend who has firered or leafgreen your haunter and then take it back when you receive it it will be a gengar.
Trade a haunter to a friend then take it back to receive gengar.
Machoke, Kadabra, Graveler, Haunter... Loads...
It won't evolve without trading