None!
Gahstly will evolve at lvl25 to Haunter then trade haunter to evolve to a 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
Get a Haunter and teach it Scary Face. Give Haunter a Quick Claw and take him to Mersprit.
Yes Corphish does evolve in Pokémon Pearl.
You'll need to trade for a Haunter and it'll evolve. As for trainer wise, the only one I could think of is Fantina, the Hearthome City's Gym Leader.
Gastly evolves to Haunter at level 25. Then, Haunter evolves into Gengar by being traded.
Gahstly will evolve at lvl25 to Haunter then trade haunter to evolve to a Gengar.
he evolves by trading him
you trade him. and he will evolve into gengar. you trade him. and he will evolve into gengar.
Haunter is one of a few Pokemon that needs to be traded to evolve. A list of a few others Graveler, Machoke, Kadabra. Those are just off the top of my head. But you will need to trade it to a friend and have them trade it back.
You have to trade to another game to make it evolve.
you can trade it at the guy at snowpoint city
No, you must trade the certain Pokemon that need to be traded to evolve to make them 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
you trade him, he evolves
It can be used to evolve a porygon2 when equipped and traded
A Protector, when traded with Rhydon, will evolve it into Rhyperior.