haunter has to be traded to evlove haunter evolve into gengar in level 42
They evolve naturally, ie graveler at level 40.
Catch a Gastly (either in Burned Tower in Ecruteak City or in Sprout Tower in Violet City) and evolve it to a Haunter (it evolves at level 25). When you have a Haunter, just trade it and it will evolve into Gengar.
The only way is to trade it. You'll need to trade for a Haunter or Gengar if you want to own one.
Wooper will evolve at Level 20.
haunter has to be traded to evlove haunter evolve into gengar in level 42
They evolve naturally, ie graveler at level 40.
evolve gastly.
Catch a Gastly (either in Burned Tower in Ecruteak City or in Sprout Tower in Violet City) and evolve it to a Haunter (it evolves at level 25). When you have a Haunter, just trade it and it will evolve into Gengar.
The only way is to trade it. You'll need to trade for a Haunter or Gengar if you want to own one.
Snorlax does not evolve. In gold, it is a non-evolutionary pokemon.
Unowns do not evolve.
You have to have it have high happiness. It doesn't evolve at a level.
Wooper will evolve at Level 20.
LEVEL 25
Farfetch'd is a Pokemon that does not evolve.
Level 42