You have to trade it.
level 40.
It evolves at Level 30
train it to level 40
haunter learns it at level 34
17
Gastly evolves into Haunter at level 25, then trade it and it will evolve again into Gengar.
You evolve it into Haunter at Level 25. To evolve Haunter into a Gengar, you need to trade it.
High friendship between 4am between 8pm
Haunter does NOT evolve by level. You evolve Haunter by trading it with a friend, and then they trade it back to you. Hope I helped :)Haunter evolves from Gastly at level 25.Haunter evolves into Gengar through trade.Haunter evolves into Gengar by trading it.
Haunter evolves by trade
yes keep on doing macthes and you will get leveld up and if you get leveled up a bunch of times you might elvole(elvole means somthing changed )
haunter has to be traded to evlove haunter evolve into gengar in level 42