You can not find an NPC to trade with, no NPC will. You have to have a friend who owns Firered or Leaf Green & trade with a REAL LIFE friend, trade back...then.....WHAT, HAUNTER IS EVOLVING!
go to snow point city on pokemon diamond,pearl,platinum and search all the house and theres a girl sitting on a chair then he will trade you a haunter for medicham
A blonde-haired woman gives you a Haunter for a Medicham in a house, in the north-west of Snowpoint City. Hope I helped :)
Whoever wants a Gengar.
To evolve haunter u have to trade it. As soon as it is traded it will evolve into Gengar.
The pre-evolution of Haunter is Ghastly. To evolve Haunter you must trade it to Friend and have them trade it back.
You cant but u can find a trainer with a Haunter and trade it with a friend, then trade back and u have Gengar.
Ghastly to Haunter is 25. Haunter to Gengar you'll have to trade it with a friend.
In order to evolve Haunter, u have to trade and it will evolve into a Gengar.
You'll need to trade for a Haunter in order for it to evolve into Gengar.
OF COURSE!! you'll need to trade an haunter to a friend, and haunter will evolve TO GENGAR
If you just trade the haunter with no items it will evolve to gengar now take it back so that you have the gengar. You can't evolve a haunter by migrating it.
you have to trade a haunter and it will evolve into gengar.
You trade haunter to get gengar.
Trade Haunter and you will get a Gengar.
Trade a Haunter and it will evolve into gengar
Trade Kadabra to get Alakazam, and Haunter to get Gengar.
To get a Gengar, you must trade a Haunter and it will then evolve into a Gengar.
There is no NPC who you can trade a Haunter to for a Gengar in Pokemon Crystal. To get Gengar you will need to trade with another player or a copy of Pokemon Gold, Silver or Crystal.
To get GENGAR you trade with someone and after the trade is complete haunter will evlove into gengar
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!