Pokedex Randomizer

Phase 9 section

Pokemon Yellow Indigo Plateau Elite Four and Champion Walkthrough

Indigo Plateau Elite Four and Champion section for the Pokemon Yellow walkthrough with wild Pokemon, trainers, items, hidden items, coordinates, and boss strategy.

By Damodar Sharma Updated June 23, 2026 Walkthrough

Defeat Lorelei, Bruno, Agatha, Lance, and the Champion Rival without leaving between fights. This page is a standalone section for Phase 9: Indigo Plateau, with source-backed Yellow encounter, trainer, item, hidden item, and boss data.

Source maps

Loreleis Room, Brunos Room, Agathas Room, Lances Room, Champions Room, and Hall Of Fame.

Wild rows0 Trainers4 Items0

Route plan

Stock Full Restores, Revives, status heals, and PP recovery. The Champion team changes with the Rival's Eevee branch.

Wild Pokemon

No wild Pokemon are sourced for this section.

Trainers

Route order Trainer Team Reward Optional / rematch note
1. Loreleis Room (5, 2)Lorelei trainer spriteLoreleiParty #1
Dewgong Yellow sprite Dewgong Lv. 54 Cloyster Yellow sprite Cloyster Lv. 53 Slowbro Yellow sprite Slowbro Lv. 54 Jynx Yellow sprite Jynx Lv. 56 Lapras Yellow sprite Lapras Lv. 56
$5,544One-time trainer; no rematch in Yellow.
2. Brunos Room (5, 2)Bruno trainer spriteBrunoParty #1
Onix Yellow sprite Onix Lv. 53 Hitmonchan Yellow sprite Hitmonchan Lv. 55 Hitmonlee Yellow sprite Hitmonlee Lv. 55 Onix Yellow sprite Onix Lv. 56 Machamp Yellow sprite Machamp Lv. 58
$5,742One-time trainer; no rematch in Yellow.
3. Agathas Room (5, 2)Agatha trainer spriteAgathaParty #1
Gengar Yellow sprite Gengar Lv. 56 Golbat Yellow sprite Golbat Lv. 56 Haunter Yellow sprite Haunter Lv. 55 Arbok Yellow sprite Arbok Lv. 58 Gengar Yellow sprite Gengar Lv. 60
$5,940One-time trainer; no rematch in Yellow.
4. Lances Room (6, 1)Lance trainer spriteLanceParty #1
Gyarados Yellow sprite Gyarados Lv. 58 Dragonair Yellow sprite Dragonair Lv. 56 Dragonair Yellow sprite Dragonair Lv. 56 Aerodactyl Yellow sprite Aerodactyl Lv. 60 Dragonite Yellow sprite Dragonite Lv. 62
$6,138One-time trainer; no rematch in Yellow.

Items And Hidden Items

No visible, hidden, or scripted item rewards are listed for this section.

Boss Strategy

Boss / branch Team Reward Danger notes Practical counters
Lorelei trainer spriteLoreleiLorelei
Dewgong Yellow sprite Dewgong Lv. 54 Cloyster Yellow sprite Cloyster Lv. 53 Slowbro Yellow sprite Slowbro Lv. 54 Jynx Yellow sprite Jynx Lv. 56 Lapras Yellow sprite Lapras Lv. 56
$5,544Ice/Water bulk and Lapras make careless Dragon/Flying plans collapse.Electric attacks, strong Fighting/Normal pressure, and status control help. Avoid relying only on Grass because Ice Beam punishes it.
Bruno trainer spriteBrunoBruno
Onix Yellow sprite Onix Lv. 53 Hitmonchan Yellow sprite Hitmonchan Lv. 55 Hitmonlee Yellow sprite Hitmonlee Lv. 55 Onix Yellow sprite Onix Lv. 56 Machamp Yellow sprite Machamp Lv. 58
$5,742Two Onix are easy, but Hitmonlee, Hitmonchan, and Machamp can punish frail special attackers.Water or Grass deletes Onix. Psychic and Flying handle the Fighters.
Agatha trainer spriteAgathaAgatha
Gengar Yellow sprite Gengar Lv. 56 Golbat Yellow sprite Golbat Lv. 56 Haunter Yellow sprite Haunter Lv. 55 Arbok Yellow sprite Arbok Lv. 58 Gengar Yellow sprite Gengar Lv. 60
$5,940Gengar, Haunter, Confuse Ray, sleep, and poison can scramble a clean run.Fast Psychic attackers, Ground coverage for Arbok, and status healing are key. Gen I Ghost does not counter Psychic the way later games imply.
Lance trainer spriteLanceLance
Gyarados Yellow sprite Gyarados Lv. 58 Dragonair Yellow sprite Dragonair Lv. 56 Dragonair Yellow sprite Dragonair Lv. 56 Aerodactyl Yellow sprite Aerodactyl Lv. 60 Dragonite Yellow sprite Dragonite Lv. 62
$6,138Dragonite and Aerodactyl punish slow or underleveled teams.Ice Beam/Blizzard is the cleanest answer. Electric handles Gyarados, Rock/Electric pressure Aerodactyl, and status can pin Dragonite.
Champion Rival trainer spriteChampion RivalChampion Rival - Jolteon branch
Sandslash Yellow sprite Sandslash Lv. 61 Alakazam Yellow sprite Alakazam Lv. 59 Exeggutor Yellow sprite Exeggutor Lv. 61 Cloyster Yellow sprite Cloyster Lv. 61 Ninetales Yellow sprite Ninetales Lv. 63 Jolteon Yellow sprite Jolteon Lv. 65
$6,435The Champion's Eevee branch defines the final matchup.Win Oak's Lab and win the optional first Route 22 Rival battle. The branch changes Eevee's final evolution and the Rival's coverage slots; keep Ground for Jolteon, Water/Ground/Rock for Flareon, and Electric/Grass for Vaporeon.
Champion Rival trainer spriteChampion RivalChampion Rival - Flareon branch
Sandslash Yellow sprite Sandslash Lv. 61 Alakazam Yellow sprite Alakazam Lv. 59 Exeggutor Yellow sprite Exeggutor Lv. 61 Magneton Yellow sprite Magneton Lv. 61 Cloyster Yellow sprite Cloyster Lv. 63 Flareon Yellow sprite Flareon Lv. 65
$6,435The Champion's Eevee branch defines the final matchup.Win Oak's Lab and skip or lose the optional first Route 22 Rival battle. The branch changes Eevee's final evolution and the Rival's coverage slots; keep Ground for Jolteon, Water/Ground/Rock for Flareon, and Electric/Grass for Vaporeon.
Champion Rival trainer spriteChampion RivalChampion Rival - Vaporeon branch
Sandslash Yellow sprite Sandslash Lv. 61 Alakazam Yellow sprite Alakazam Lv. 59 Exeggutor Yellow sprite Exeggutor Lv. 61 Ninetales Yellow sprite Ninetales Lv. 61 Magneton Yellow sprite Magneton Lv. 63 Vaporeon Yellow sprite Vaporeon Lv. 65
$6,435The Champion's Eevee branch defines the final matchup.Lose the Oak's Lab Rival battle. The branch changes Eevee's final evolution and the Rival's coverage slots; keep Ground for Jolteon, Water/Ground/Rock for Flareon, and Electric/Grass for Vaporeon.

Completion Checklist

  • Enter with a League-ready team and items.
  • Beat the Elite Four in sequence.
  • Defeat the Champion Rival.
  • Enter the Hall of Fame.
  • Verify the Yellow encounter rows before leaving if you are filling the Pokedex.
  • Use the item rows as a visible-item and hidden-item sweep before moving to the next section.

Sources

  • pret/pokeyellow: wild encounters, trainer parties, trainer money, map object events, hidden event items, rods, trades, and prize Pokemon.
  • Encounter odds aggregate the Gen I ten-slot rates: 51/256, 51/256, 39/256, 25/256, 25/256, 25/256, 13/256, 13/256, 11/256, and 3/256.
  • Yellow has no day/night encounter column; tables use Game, Method, and Condition instead.

Related articles

Pokemon Yellow Walkthrough HubPhase 9: Indigo PlateauPrevious: Route 23 and Victory RoadNext: Cerulean Cave Completion