Aw I'm sorry but Haunter can only, and ONLY evolve thru trade. Their is no other way. Sorry man but hey at least you've been raising a haunter so when you find someone willing to trade and tradeback with you, it will be a strong gengar.
Haunter evolves through a trade.
There is no NPC who you can trade a Haunter to for a Gengar in Pokemon Crystal. To get Gengar you will need to trade with another player or a copy of Pokemon Gold, Silver or Crystal.
In Pokemon Liquid Crystal, Haunter evolves into Gengar by trading it with another player. Once Haunter is traded, it will evolve into Gengar instantly.
Pewter city pokemon center
It evolves at Lvl. 25
In Pokémon Crystal, Haunter learns Hypnosis at level 40. This move allows Haunter to put opponents to sleep, which can be strategically useful in battles. Players can also use TMs to teach Haunter other moves if they prefer different strategies.
Yes, Haunter is a very good Pokemon
He will appear at random....ALWAYS have a high level Haunter with mean look,so he cannot escape...
ive seen somebody use a gengar with dragonbreath but i think u cant
Haunter is a ghost type Pokemon
look in the Pokemon tower in lavender for haunter. note, haunter is hard to find in the Pokemon tower
You trade haunter to get gengar.