he evolves by trading him
Gahstly will evolve at lvl25 to Haunter then trade haunter to evolve to a Gengar.
you can trade it at the guy at snowpoint city
Gastly evolves to Haunter at level 25. Then, Haunter evolves into Gengar by being traded.
It evolves into Haunter at Level 25.
Gastly evolves into Haunter at level 25 and then into Gengar when you trade it to another game.
None!
you trade him. and he will evolve into gengar. you trade him. and he will evolve into gengar.
You have to trade to another game to make it evolve.
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
In Pokémon Pearl, in order to catch Gengar you can find wild Gastly in Lost Tower and Old Chateau and then after catching one you can raise it until it reaches Level 25 at which point it will evolve into Haunter and then you can trade Haunter to another trainer in order to evolve it into Gengar and then you can catch wild Haunter in Turnback Cave and you can only catch wild Haunter in Old Chateau in the event of Ruby, Sapphire, FireRed, LeafGreen or Emerald inserted into the Gameboy Advanced slot and then you can evolve Haunter into Gengar by trading Haunter to another trainer.
mightyena doesn't evolve on Pokemon pearl, he doesn't evolve in any Pokemon game!
Buizel evolve at level 26.