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.

Will



 * Moves: Quick Attack, Future Sight, Psychic, Confuse Ray
 * Moves: Ice Punch, Double Slap, Psychic, Loverly Kiss
 * Moves: Psychic, Egg Bomb, Leech Seed, Reflect
 * Moves: Psychic, Body Slam, Curse, Amnesia
 * Moves: Psychic, Quick Attack, Future Sight, Confuse Ray

Afterwards, heal up, and reorganise your Pokémon so that you have a Fire, Flying or Rock-type leading.

Koga



 * Moves:

Afterwards, be sure to lead with a Psychic or Flying-type.

Bruno




Once beaten, be sure to place a fighting-type as your lead.

Karen




Once finished, place an electric into the lead because Lance's first pokemon is a gyarados.

Champion Lance




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...