There is no certain level you have to trade it to evolve it
You have to trade.
you cant you have to evolve haunter
you have to trade a haunter and it will evolve into gengar.
the Pokemon that evolve immediately when traded are graveler into golem, haunter into gengar, and kadabra into alakazam, if that's what you mean.
No it won't Haunter only evolves when you trade across to a similar game, you have to trade it to Leaf green for it to evolve. It will migrate to Pokemon platinum and will stay as a haunter. To evolve it to a Genger on platinum, you must trade it to another platinum, diamond or pearl
you trade him. and he will evolve into gengar. you trade him. and he will evolve into gengar.
You have to trade the Haunter to evolve. I learned the hard way. It got to level 59 and I traded..... it evolved!
Yes. The pokemon is Haunter. In order to evolve Haunter you will have to trade him with a friend and he will evolve. Just trade back to get Gengar.
To get a Gengar, you must trade a Haunter and it will then evolve into a Gengar.
you trade him with NO item!
Ok just stop lvling up you trade your haunter. Then it volves into gengar
gengar cannot evole :P