Haunter is one of those Pokémon that feels like it should evolve by level — but in Pokémon FireRed and LeafGreen, that’s not how it works. If you’re playing the Nintendo Switch version and your ...

Gastly is a Ghost/Poison-type introduced in the first generation of Pokemon. If you've made it to Wild Zone 4, then you've probably caught a Gastly already and might have evolved it into a Haunter, ...