You have to trade the Haunter to evolve. I learned the hard way. It got to level 59 and I traded..... it evolved!
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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.
Trade Haunter and you will get a Gengar.
To get a Gengar, you must trade a Haunter and it will then evolve into a Gengar.
you trade him. and he will evolve into gengar. you trade him. and he will evolve into gengar.
Gastly evolves once it reaches level 18. It evolves into a Haunter. To evolve Haunter into a Gengar, you must trade it to another player.