Haunter can level up and evolve. It evolves by trading with another player.
Haunter evolves into Gengar by trading lol
Gastly evolves into Haunter at level 25, then trade it and it will evolve again into Gengar.
No it won't Haunter only evolves when you trade across to a similar game, you have to trade it to Leaf green for it to evolve. It will migrate to Pokemon platinum and will stay as a haunter. To evolve it to a Genger on platinum, you must trade it to another platinum, diamond or pearl
It evolves at Lvl. 25
It evolves at a level 30
Gastly evolves at level 22 then Haunter evolves by trading it.
Gastly evolves at level 20 into Haunter
Gastly evolves into Haunter once it reaches level 25 or higher.
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.
it evolves in a trade
just when gastly evolves into haunter it dosent matter what level you trade it it will evolve
Ghastly evolves into Haunter at level 25. Then Haunter evolves by trading.
Haunter evolves into Gengar by trading lol
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.
Haunter evolves through a trade.
Gastly evolves into Haunter at level 25, then trade it and it will evolve again into Gengar.