Pokedex Randomizer

Phase 4 section

Pokemon Yellow Rocket Hideout and Celadon Gym Walkthrough

Rocket Hideout and Celadon Gym 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

Take the Lift Key, defeat Giovanni, get the Silph Scope, then clear Erika. This page is a standalone section for Phase 4: Rainbow Badge, with source-backed Yellow encounter, trainer, item, hidden item, and boss data.

Source maps

Rocket Hideout B1F, Rocket Hideout B2F, Rocket Hideout B3F, Rocket Hideout B4F, Rocket Hideout Elevator, and Celadon Gym.

Wild rows0 Trainers18 Items16

Route plan

The Hideout spin tiles hide several strong TMs. After Giovanni, the Silph Scope unlocks Pokemon Tower's true ghosts.

Wild Pokemon

No wild Pokemon are sourced for this section.

Trainers

Route order Trainer Team Reward Optional / rematch note
1. Rocket Hideout B1F (26, 8)Rocket trainer spriteRocketParty #8
Drowzee Yellow sprite Drowzee Lv. 21 Machop Yellow sprite Machop Lv. 21
$630One-time trainer; no rematch in Yellow.
2. Rocket Hideout B1F (12, 6)Rocket trainer spriteRocketParty #9
Raticate Yellow sprite Raticate Lv. 21 Raticate Yellow sprite Raticate Lv. 21
$630One-time trainer; no rematch in Yellow.
3. Rocket Hideout B1F (18, 17)Rocket trainer spriteRocketParty #10
Grimer Yellow sprite Grimer Lv. 20 Koffing Yellow sprite Koffing Lv. 20 Koffing Yellow sprite Koffing Lv. 20
$600One-time trainer; no rematch in Yellow.
4. Rocket Hideout B1F (15, 25)Rocket trainer spriteRocketParty #11
Rattata Yellow sprite Rattata Lv. 19 Raticate Yellow sprite Raticate Lv. 19 Raticate Yellow sprite Raticate Lv. 19 Rattata Yellow sprite Rattata Lv. 19
$570One-time trainer; no rematch in Yellow.
5. Rocket Hideout B1F (28, 18)Rocket trainer spriteRocketParty #12
Grimer Yellow sprite Grimer Lv. 22 Koffing Yellow sprite Koffing Lv. 22
$660One-time trainer; no rematch in Yellow.
6. Rocket Hideout B2F (20, 12)Rocket trainer spriteRocketParty #13
Zubat Yellow sprite Zubat Lv. 17 Koffing Yellow sprite Koffing Lv. 17 Grimer Yellow sprite Grimer Lv. 17 Zubat Yellow sprite Zubat Lv. 17 Raticate Yellow sprite Raticate Lv. 17
$510One-time trainer; no rematch in Yellow.
7. Rocket Hideout B3F (10, 22)Rocket trainer spriteRocketParty #14
Rattata Yellow sprite Rattata Lv. 20 Raticate Yellow sprite Raticate Lv. 20 Drowzee Yellow sprite Drowzee Lv. 20
$600One-time trainer; no rematch in Yellow.
8. Rocket Hideout B3F (26, 12)Rocket trainer spriteRocketParty #15
Machop Yellow sprite Machop Lv. 21 Machop Yellow sprite Machop Lv. 21
$630One-time trainer; no rematch in Yellow.
9. Rocket Hideout B4F (25, 3)Giovanni trainer spriteGiovanniParty #1
Onix Yellow sprite Onix Lv. 25 Rhyhorn Yellow sprite Rhyhorn Lv. 24 Persian Yellow sprite Persian Lv. 29
$2,871One-time trainer; no rematch in Yellow.
10. Rocket Hideout B4F (11, 2)Rocket trainer spriteRocketParty #18
Koffing Yellow sprite Koffing Lv. 21 Zubat Yellow sprite Zubat Lv. 21
$630One-time trainer; no rematch in Yellow.
11. Celadon Gym (4, 3)Erika trainer spriteErikaParty #1
Tangela Yellow sprite Tangela Lv. 30 Weepinbell Yellow sprite Weepinbell Lv. 32 Gloom Yellow sprite Gloom Lv. 32
$3,168One-time trainer; no rematch in Yellow.
12. Celadon Gym (2, 11)Lass trainer spriteLassParty #17
Bellsprout Yellow sprite Bellsprout Lv. 23 Weepinbell Yellow sprite Weepinbell Lv. 23
$345One-time trainer; no rematch in Yellow.
13. Celadon Gym (7, 10)Beauty trainer spriteBeautyParty #1
Oddish Yellow sprite Oddish Lv. 21 Bellsprout Yellow sprite Bellsprout Lv. 21 Oddish Yellow sprite Oddish Lv. 21 Bellsprout Yellow sprite Bellsprout Lv. 21
$1,470One-time trainer; no rematch in Yellow.
14. Celadon Gym (9, 5)Jr. Trainer F trainer spriteJr. Trainer FParty #11
Bulbasaur Yellow sprite Bulbasaur Lv. 24 Ivysaur Yellow sprite Ivysaur Lv. 24
$480One-time trainer; no rematch in Yellow.
15. Celadon Gym (1, 5)Beauty trainer spriteBeautyParty #2
Bellsprout Yellow sprite Bellsprout Lv. 24 Bellsprout Yellow sprite Bellsprout Lv. 24
$1,680One-time trainer; no rematch in Yellow.
16. Celadon Gym (6, 3)Lass trainer spriteLassParty #18
Oddish Yellow sprite Oddish Lv. 23 Gloom Yellow sprite Gloom Lv. 23
$345One-time trainer; no rematch in Yellow.
17. Celadon Gym (3, 3)Beauty trainer spriteBeautyParty #3
Exeggcute Yellow sprite Exeggcute Lv. 26
$1,820One-time trainer; no rematch in Yellow.
18. Celadon Gym (5, 3)Cooltrainer F trainer spriteCooltrainer FParty #1
Weepinbell Yellow sprite Weepinbell Lv. 24 Gloom Yellow sprite Gloom Lv. 24 Ivysaur Yellow sprite Ivysaur Lv. 24
$840One-time trainer; no rematch in Yellow.

Items And Hidden Items

Item Type Area / direction Coordinate Requirement
Escape RopeVisible item ballVisible item ball at (11, 14) in Rocket Hideout B1F.(11, 14)Reach this tile; HMs or story flags may be needed for late-game dungeons.
Hyper PotionVisible item ballVisible item ball at (9, 17) in Rocket Hideout B1F.(9, 17)Reach this tile; HMs or story flags may be needed for late-game dungeons.
Moon StoneVisible item ballVisible item ball at (1, 11) in Rocket Hideout B2F.(1, 11)Reach this tile; HMs or story flags may be needed for late-game dungeons.
NuggetVisible item ballVisible item ball at (16, 8) in Rocket Hideout B2F.(16, 8)Reach this tile; HMs or story flags may be needed for late-game dungeons.
TM07 Horn DrillVisible item ballVisible item ball at (6, 12) in Rocket Hideout B2F.(6, 12)Reach this tile; HMs or story flags may be needed for late-game dungeons.
Super PotionVisible item ballVisible item ball at (3, 21) in Rocket Hideout B2F.(3, 21)Reach this tile; HMs or story flags may be needed for late-game dungeons.
TM10 Double EdgeVisible item ballVisible item ball at (26, 17) in Rocket Hideout B3F.(26, 17)Reach this tile; HMs or story flags may be needed for late-game dungeons.
Rare CandyVisible item ballVisible item ball at (20, 14) in Rocket Hideout B3F.(20, 14)Reach this tile; HMs or story flags may be needed for late-game dungeons.
HP UpVisible item ballVisible item ball at (10, 12) in Rocket Hideout B4F.(10, 12)Reach this tile; HMs or story flags may be needed for late-game dungeons.
TM02 Razor WindVisible item ballVisible item ball at (9, 4) in Rocket Hideout B4F.(9, 4)Reach this tile; HMs or story flags may be needed for late-game dungeons.
IronVisible item ballVisible item ball at (12, 20) in Rocket Hideout B4F.(12, 20)Reach this tile; HMs or story flags may be needed for late-game dungeons.
Silph ScopeVisible item ballVisible item ball at (25, 2) in Rocket Hideout B4F.(25, 2)Reach this tile; HMs or story flags may be needed for late-game dungeons.
Lift KeyVisible item ballVisible item ball at (10, 2) in Rocket Hideout B4F.(10, 2)Reach this tile; HMs or story flags may be needed for late-game dungeons.
PP UpHidden itemHidden on the searchable tile at (21, 15) in Rocket Hideout B1F.(21, 15)Press A on the hidden tile or use the Itemfinder nearby.
NuggetHidden itemHidden on the searchable tile at (27, 17) in Rocket Hideout B3F.(27, 17)Press A on the hidden tile or use the Itemfinder nearby.
Super PotionHidden itemHidden on the searchable tile at (25, 1) in Rocket Hideout B4F.(25, 1)Press A on the hidden tile or use the Itemfinder nearby.

Boss Strategy

Boss / branch Team Reward Danger notes Practical counters
Jessie and James trainer spriteJessie and JamesJessie and James - Rocket Hideout B4F
Koffing Yellow sprite Koffing Lv. 25 Meowth Yellow sprite Meowth Lv. 25 Ekans Yellow sprite Ekans Lv. 25
$750Koffing, Meowth, and Ekans interrupt the Giovanni route.Psychic and Ground attacks are clean; keep Poison healing ready if Koffing stalls.
Giovanni trainer spriteGiovanniGiovanni - Rocket Hideout
Onix Yellow sprite Onix Lv. 25 Rhyhorn Yellow sprite Rhyhorn Lv. 24 Persian Yellow sprite Persian Lv. 29
$2,871Persian joins Onix and Rhyhorn, making Giovanni less free than a pure Ground/Rock fight.Water and Grass attacks handle Onix/Rhyhorn. Use Fighting, status, or a sturdy Normal-neutral pivot for Persian.

Completion Checklist

  • Get Lift Key from the Rocket.
  • Pick up Hideout TMs/items.
  • Defeat Giovanni for Silph Scope.
  • Earn the Rainbow Badge from Erika.
  • 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 4: Rainbow BadgePrevious: Celadon City and Game CornerNext: Celadon Gym