Have to train a gastly to evolve into haunter trade it to a friend and take it back boom its gengar.
Using the FireRed Dongle method, in Diamond and Pearl you will find Caterpie, Metapod, Ekans, Arbok, Growlithe, Elekid and Gengar and in Platinum you'll find Caterpie, Metapod, Ekans, Arbok, Growlithe and Gengar.
Put in a Pokemon GBA cartridge in the GBA slot (Ruby/Sapphire/Emerald/FireRed/LeafGreen) and then go to the Haunted Mansion in Eterna Forest, inside you will have a very rare chance of finding a Gengar.
It depends what you are trying to win my friend. If you are trying to beat the game with these Pokemon, and they are decent levels you have a clear shot at victory.
Gengar is the fastest Ghost type pokemon.
you get him someow in the lost tower
you must trade a hauntar
you can't.you must trade
Articuno, Moltres, Zapdos, Alakazam, Blastoise, Gengar.
Gengar is a ghost type of Pokemon. You can get it using the duel slot by putting FireRed into the Gameboy slot.
It doesn't evolve. Gengar is a final evolution.
Trade it from from Firered or Leafgreen. Or get a gameshark and enter the CORRECT code.
Using the dual-slot feature with firered or leafgreen will make it possible to find gengar in the second room from the right on 2F
Charizard, Zapdos, Articuno, Mewtwo, Vaporeon, Gengar.
you have to have the game firered in your ds slot then you can get it
Gastly > lvl 25 > Haunter > trade evolution > Gengar
Gastly > lvl 25 > Haunter > trade evolution > Gengar
Using the FireRed Dongle method, in Diamond and Pearl you will find Caterpie, Metapod, Ekans, Arbok, Growlithe, Elekid and Gengar and in Platinum you'll find Caterpie, Metapod, Ekans, Arbok, Growlithe and Gengar.