I beat the elite four with level 40-43 pokemon.
If you have a water type pokemon, teach it ice beam/avalanche. Also, teach Taunt to one of your pokemon. Both will help you TONS. Koga LOVES hax moves.
If you have a water type pokemon, teach it ice beam/avalanche. Also, teach Taunt to one of your pokemon. Both will help you TONS. Koga LOVES hax moves.