just like in all other Pokemon games trade it!!!!!!!!!!
You have to trade the Pokemon to evolve it.
You will need to level up Haunter to level 50 to evolve it in Pokemon Resolute.
Trade Haunter with any Pokemon to make it evolve!
Actually, Haunter does evolve. Its evolves into Gengar when you trade it.
In order to evolve Haunter, u have to trade and it will evolve into a Gengar.
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.
in order to evolve kadabra you have to trade it
You'll need to trade for a Haunter in order for it to evolve into Gengar.
You trade haunter to get gengar.
Haunter evolves when traded
Trade Haunter and you will get a Gengar.
in any Pokemon you evolve haunter by trading