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Pokemon Red and Blue Celadon Gym Walkthrough

Rainbow Badge

Celadon Gym section for the Pokemon Red and Blue walkthrough with wild Pokemon, trainers, items, hidden items, coordinates, and boss strategy.

By Damodar Sharma Updated June 19, 2026 Walkthrough

Earn the Rainbow Badge if you split the gym from the Hideout route. This page is a standalone section for Phase 4: Rainbow Badge, with source-backed Red/Blue encounter, trainer, item, hidden item, and boss data.

Source maps

Celadon Gym.

Wild rows0 Trainers8 Items1

Route plan

Fire, Flying, Bug, and Psychic moves are the cleanest way through the Grass/Poison gym.

Wild Pokemon

No wild Pokemon are sourced for this section.

Trainers

Route order Trainer Team Reward Optional / rematch note
1. Celadon Gym (4, 3)Erika trainer spriteErikaParty #1
Victreebel Red and Blue sprite Victreebel Lv. 29 Tangela Red and Blue sprite Tangela Lv. 24 Vileplume Red and Blue sprite Vileplume Lv. 29
$2,871One-time trainer; no rematch in Red/Blue.
2. Celadon Gym (2, 11)Lass trainer spriteLassParty #17
Bellsprout Red and Blue sprite Bellsprout Lv. 23 Weepinbell Red and Blue sprite Weepinbell Lv. 23
$345One-time trainer; no rematch in Red/Blue.
3. Celadon Gym (7, 10)Beauty trainer spriteBeautyParty #1
Oddish Red and Blue sprite Oddish Lv. 21 Bellsprout Red and Blue sprite Bellsprout Lv. 21 Oddish Red and Blue sprite Oddish Lv. 21 Bellsprout Red and Blue sprite Bellsprout Lv. 21
$1,470One-time trainer; no rematch in Red/Blue.
4. Celadon Gym (9, 5)Jr. Trainer F trainer spriteJr. Trainer FParty #11
Bulbasaur Red and Blue sprite Bulbasaur Lv. 24 Ivysaur Red and Blue sprite Ivysaur Lv. 24
$480One-time trainer; no rematch in Red/Blue.
5. Celadon Gym (1, 5)Beauty trainer spriteBeautyParty #2
Bellsprout Red and Blue sprite Bellsprout Lv. 24 Bellsprout Red and Blue sprite Bellsprout Lv. 24
$1,680One-time trainer; no rematch in Red/Blue.
6. Celadon Gym (6, 3)Lass trainer spriteLassParty #18
Oddish Red and Blue sprite Oddish Lv. 23 Gloom Red and Blue sprite Gloom Lv. 23
$345One-time trainer; no rematch in Red/Blue.
7. Celadon Gym (3, 3)Beauty trainer spriteBeautyParty #3
Exeggcute Red and Blue sprite Exeggcute Lv. 26
$1,820One-time trainer; no rematch in Red/Blue.
8. Celadon Gym (5, 3)Cooltrainer F trainer spriteCooltrainer FParty #1
Weepinbell Red and Blue sprite Weepinbell Lv. 24 Gloom Red and Blue sprite Gloom Lv. 24 Ivysaur Red and Blue sprite Ivysaur Lv. 24
$840One-time trainer; no rematch in Red/Blue.

Items And Hidden Items

Item Type Area / direction Coordinate Requirement
TM21 Mega DrainGym rewardDefeat Erika.-Defeat Erika.

Boss Strategy

Boss / branch Team Reward Danger notes Practical counters
Erika trainer spriteErikaErika
Victreebel Red and Blue sprite Victreebel Lv. 29 Tangela Red and Blue sprite Tangela Lv. 24 Vileplume Red and Blue sprite Vileplume Lv. 29
$2,871Victreebel and Vileplume spread sleep/status and Tangela can stall physical attackers.Fire, Flying, Bug, and Psychic attacks are best. Bring Awakenings or a clean switch if Sleep Powder lands.

Completion Checklist

  • Cut the tree to enter.
  • Beat all trainers for experience.
  • Defeat Erika.
  • Verify the wild table's version splits 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/pokered: 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.
  • Red/Blue has no day/night encounter column; tables use Version, Method, and Condition instead.

Related articles

Pokemon Red and Blue Walkthrough HubPhase 4: Rainbow BadgePrevious: Rocket Hideout and Celadon GymNext: Pokemon Tower and Routes 12-15