You have to trade haunter to a friend to evolve it.
to evolve haunter into gengar you must trade it
Haunter does not evolve by leveling it up, You must trade it to get it to evolve into a Gengar. So technically it is any level 25 or above (the level haunter evolves at).
you have to fill your national pokedex and catch suicune, entei or rikuo.
you can only evolve haunter by trading
at any level
to evolve haunter you must trade it
Gahstly will evolve at lvl25 to Haunter then trade haunter to evolve to a Gengar.
Gastly evolves into Haunter at level 25, then trade it and it will evolve again into Gengar.
in pokemon tower in lavendar town
Haunter can level up and evolve. It evolves by trading with another player.
Crobat doesn't evolve.
In Pokémon FireRed, Gastly evolves into Haunter at Level 25.
Gastly > lvl 25 > Haunter > trade evolution > Gengar
Gastly evolves to Haunter at level 25.
At level 200
Gastly > lvl 25 > Haunter > trade evolution > Gengar
You will need to level up Haunter to level 50 to evolve it in Pokemon Resolute.
You have to trade it to evolve it.
You mean how you get Gengar then train a gastly to level 25 it will evolve to Haunter then trade to a friend who has firered or leafgreen your haunter and then take it back when you receive it it will be a gengar.
Haunter evolves through a trade.
Gahstly will evolve at lvl25 to Haunter then trade haunter to evolve to a Gengar.
Gastly evolves into Haunter at level 25, then trade it and it will evolve again into Gengar.
you have to trade