It evolves at Lvl. 25
Gahstly will evolve at lvl25 to Haunter then trade haunter to evolve to a Gengar.
Gastly evolves into Haunter at level 25, then trade it and it will evolve again into Gengar.
You have to trade haunter to a friend to evolve it.
Haunter can level up and evolve. It evolves by trading with another player.
Evolve Ghastly. Ghastly can be found at White Forest. Evolve it into Haunter at level 25 and then evolve Haunter into Gengar by trading Haunter.
Haunter evolves through a trade.
You will need to level up Haunter to level 50 to evolve it in Pokemon Resolute.
You have to trade it to evolve it.
Gahstly will evolve at lvl25 to Haunter then trade haunter to evolve to a Gengar.
Gastly evolves into Haunter at level 25, then trade it and it will evolve again into Gengar.
you have to trade
You have to trade haunter to a friend to evolve it.
no level you have to trade dude
Haunter will evolve into Gengar when it is traded. It doesn't matter what level it is, just trade it with someone and when they get it it will evolve into Gengar, then get them to trade it back to you.
Haunter can level up and evolve. It evolves by trading with another player.
You have to trade the Haunter to evolve. I learned the hard way. It got to level 59 and I traded..... it evolved!
Haunter at level 25