Haunter does not evolve at a level! You had it right when you said "after Haunter is traded"! Haunter evolves into Gengar as soon as the trade is made! Unless it is holding an Everstone, of course. I am not sure what needs to happen when it is holding an Everstone while traded.
At the moment of trade
To evolve haunter u have to trade it. As soon as it is traded it will evolve into Gengar.
It evolves at lv.15 and can then learn shadow punch.
The pre-evolution of Haunter is Ghastly. To evolve Haunter you must trade it to Friend and have them trade it back.
just when gastly evolves into haunter it dosent matter what level you trade it it will evolve
Haunter at level 25
Haunter does not evolve into Gengar at a certain level. Haunter needs to be traded to another player. Once he is traded, he will evolve.
haunter has to be traded to evlove haunter evolve into gengar in level 42
Gastly evolves into Haunter at level 25, then trade it and it will evolve again into Gengar.
haunter evolves into genger by being traded you only can it evolve by trading your haunter
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.
You have to trade the Haunter to evolve. I learned the hard way. It got to level 59 and I traded..... it evolved!
A Haunter has to be traded to evolve. You have to trade it without it holding an Everstone and it will evolve into a Gengar. The Everstone will stop the evolution process.
haunter evolves at any level but you just have to trade it
To evolve haunter u have to trade it. As soon as it is traded it will evolve into Gengar.
Gastly evolves to Haunter at level 25. Then, Haunter evolves into Gengar by being traded.
Ghastly evolves into Haunter at level 25, and Haunter evolves into Gengar when traded.
It evolves at lv.15 and can then learn shadow punch.