This is it, the battle with the great Elite Four. Be sure to buy Revives, Hyper Potions, and bring along some Max Elixirs before going in to fight the Elite Four. Bring your best six pokemon, all should be a variety. I advise you to bring along a water, electric, ice, ground, psychic, and fire typed pokemon. I advise you to bring Blastoise with Bubblebeam, Bite, Surf, and Hydro Pump, Zapdos with Thundershock, Thunder, and Drill Peck, Articuno with Ice Beam, Blizzard, and Peck, Dugtrio with Dig, Earthquake, Slash, and Fissure, Hypno with Confusion, Psychic, Hypnosis, and Dream Eater, and Moltres with Fire Spin, Fire Blast, Flamethrower, and a flying attack. All of your pokemons' levels should be level 65 and up. Heal your pokemon and good luck!

The first member of the Elite Four is Lorelei. She uses water and ice pokemon. Use Zapdos' Thunder to kill them all. She uses Dewgong level 54, Cloyster level 53, Slowbro level 54, Jynx level 56, and Lapras level 56.

The second member of the Elite Four is Bruno. He uses rock and fighting pokemon. Use Blastoise's Hydro Pump and Hypno's Psychic to kill them. He uses Onix level 53, Hitmonchan level 55, Hitmonlee level 55, Onix level 56, and Machamp level 58.

The third member of the Elite Four is Agatha. She uses ghost and poison pokemon. Use Hypno's Psychic to kill them. She uses Gengar level 56, Golbat level 56, Haunter level 55, Arbok level 58, and Gengar level 60.

The last member of the Elite Four is Lance. He uses dragon pokemon. Actually, Gyrados is a water and flying typed pokemon. Use Articuno's Ice Beam and Zapdos' Thunder to kill them. He uses Gyrados level 58, Dragonair level 56, Dragonair level 56, Aerodactyl level 60, and Dragonite level 62. These pokemon can be very dangerous so be very careful.

After you beat the Elite Four, you have to go directly to fight Gary. You can't go back to the Pokecenter to heal so you should have brought some hyper potions and max elixirs.