Mt. Moon — Pokémon Heart & Soul
Every wild Pokémon here, by encounter method.
Mt. Moon lists 7 Pokémon across 2 encounter methods (grass, grass), between level 43 and 50.
Mt. Moon in other guides
The same area in other ROM hacks on this site. Each one has its own encounter table.
The original game's table for this area:
Pokémon CrystalPokémon FireRed & LeafGreenPokémon Gold & SilverPokémon HeartGold & SoulSilverPokémon Red & BluePokémon Yellow
Opens up at Beat Leader Brock — Pewter City Gym, badge 9. 3 trainers here: