Pokémon Gold and Silver/Indigo Plateau

Here, your journey will be half way over, the Pokémon League Elite Four awaits, it is recommended that first, you get some powerful Pokémon on your team (>lvl. 50) then go in.

You may also want some items, the Center is also a Mart and the person with the will teleport you back to New Bark Town.

Reccomended Pokémon
It is recommended to have at least some of these:
 * (Crystal especially): Suicune - Ice and flying type moves to beat Bruno and Lance
 * Gyarados - Strong water and Dragon moves to beat Lance
 * Starter - Well Trained, cyndaquail has 5 Super advantages, Chickorita has barely any and Totodile has about 3.
 * Pidgeot - Bruno
 * (Crystal Especially) Dratini - Very strong Dragon Type, Good Vs Lance
 * Umbreon - Good Dark Type to flush out Will
 * Crobat - Great Dark and Flying to beat Will, Bruno and Koga
 * Alakazam or Kadabra - Beat Koga

One of the best strategies
To beat almost any other Pokémon, get a Smeargle and teach it a one-hit KO move and lock-on. While in battle, first use lock on, then use a one-hit KO move such as Fissure, Horn Drill, or Guillotine and as long as the Smeargle is on a lower level than the opposition, it should work.

Trainers

 * Will
 * Psychic Pokémon


 * Koga
 * Poison Pokémon


 * Bruno
 * Fighting Pokémon


 * Karen
 * Dark Pokémon


 * Champion Lance
 * Flying - Dragon Pokémon

After defeating the Elite Four and Lance, the end credits roll. However, your journey is not over yet, you still have 8 more badges to get...