Pokedex Randomizer

Phase 7 section

Pokemon FireRed and LeafGreen Routes 19, 20, 21, and Seafoam Islands Walkthrough

Routes 19, 20, 21, and Seafoam Islands section for the FireRed and LeafGreen walkthrough with source-backed wild Pokemon, trainers, items, hidden items, bosses, and route notes.

By Damodar Sharma Updated June 24, 2026 Walkthrough

Surf from Fuchsia or Pallet, route through Seafoam, push boulders, and catch Articuno if desired. This page is a standalone section for Phase 7: Volcano Badge + First Sevii Trip, with FireRed/LeafGreen source data for encounters, trainers, items, hidden items, and boss routing.

Source maps

Route 19, Route 20, Route 21 North, Route 21 South, Seafoam Islands 1F, Seafoam Islands B1F, Seafoam Islands B2F, Seafoam Islands B3F, and Seafoam Islands B4F.

Wild rows130 Trainers32 Items9

Route plan

Seafoam requires Strength boulder routing to control currents. Bring Escape Ropes and Ice coverage answers.

Route Notes

  • Articuno is on Seafoam B4F at Lv. 50.

Wild Pokemon

Version

Each area below has its own table, split by encounter method. Standard wild rows merge every slot for a species into one line with a combined rate, and FireRed/LeafGreen exclusives are marked with FR/LG game chips; there is no time-of-day split in these remakes. Underlying slot odds: grass and cave 20/20/10/10/10/10/5/5/4/4/1/1; Surf and Rock Smash 60/30/5/4/1; Old Rod 70/30; Good Rod 60/20/20; Super Rod 40/40/15/4/1. Gift, static, trade, and prize Pokemon keep their own labeled rows.

Route 19

Route 19 wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Surfing
Tentacool FireRed and LeafGreen sprite Tentacool FRLG5-40100%—
Fishing — Old Rod
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5100%—
Fishing — Good Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1560%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1560%—
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1520%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1520%—
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5-1520%—
Fishing — Super Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG15-2540%—
Krabby FireRed and LeafGreen sprite Krabby FRLG15-2540%—
Gyarados FireRed and LeafGreen sprite Gyarados FRLG15-2515%—
Kingler FireRed and LeafGreen sprite Kingler FRLG25-354%—
Seadra FireRed and LeafGreen sprite Seadra FRLG25-354%—
Psyduck FireRed and LeafGreen sprite Psyduck FRLG25-351%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG25-351%—

Route 20

Route 20 wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Surfing
Tentacool FireRed and LeafGreen sprite Tentacool FRLG5-40100%—
Fishing — Old Rod
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5100%—
Fishing — Good Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1560%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1560%—
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1520%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1520%—
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5-1520%—
Fishing — Super Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG15-2540%—
Krabby FireRed and LeafGreen sprite Krabby FRLG15-2540%—
Gyarados FireRed and LeafGreen sprite Gyarados FRLG15-2515%—
Kingler FireRed and LeafGreen sprite Kingler FRLG25-354%—
Seadra FireRed and LeafGreen sprite Seadra FRLG25-354%—
Psyduck FireRed and LeafGreen sprite Psyduck FRLG25-351%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG25-351%—

Route 21 North

Route 21 North wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Tangela FireRed and LeafGreen sprite Tangela FRLG17-28100%—
Surfing
Tentacool FireRed and LeafGreen sprite Tentacool FRLG5-40100%—
Fishing — Old Rod
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5100%—
Fishing — Good Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1560%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1560%—
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1520%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1520%—
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5-1520%—
Fishing — Super Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG15-2540%—
Krabby FireRed and LeafGreen sprite Krabby FRLG15-2540%—
Gyarados FireRed and LeafGreen sprite Gyarados FRLG15-2515%—
Kingler FireRed and LeafGreen sprite Kingler FRLG25-354%—
Seadra FireRed and LeafGreen sprite Seadra FRLG25-354%—
Psyduck FireRed and LeafGreen sprite Psyduck FRLG25-351%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG25-351%—

Route 21 South

Route 21 South wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Tangela FireRed and LeafGreen sprite Tangela FRLG17-28100%—
Surfing
Tentacool FireRed and LeafGreen sprite Tentacool FRLG5-40100%—
Fishing — Old Rod
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5100%—
Fishing — Good Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1560%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1560%—
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1520%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1520%—
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5-1520%—
Fishing — Super Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG15-2540%—
Krabby FireRed and LeafGreen sprite Krabby FRLG15-2540%—
Gyarados FireRed and LeafGreen sprite Gyarados FRLG15-2515%—
Kingler FireRed and LeafGreen sprite Kingler FRLG25-354%—
Seadra FireRed and LeafGreen sprite Seadra FRLG25-354%—
Psyduck FireRed and LeafGreen sprite Psyduck FRLG25-351%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG25-351%—

Seafoam Islands 1F

Seafoam Islands 1F wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Psyduck FireRed and LeafGreen sprite Psyduck FRLG26-27 or 29 or 31 or 3355%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG26-27 or 29 or 31 or 3355%—
Zubat FireRed and LeafGreen sprite Zubat FRLG22 or 24 or 2624%—
Golbat FireRed and LeafGreen sprite Golbat FRLG26 or 28 or 3011%—

Seafoam Islands B1F

Seafoam Islands B1F wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Psyduck FireRed and LeafGreen sprite Psyduck FRLG29 or 3140%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG29 or 3140%—
Zubat FireRed and LeafGreen sprite Zubat FRLG22 or 24 or 2624%—
Golbat FireRed and LeafGreen sprite Golbat FRLG26 or 28 or 3011%—
Seel FireRed and LeafGreen sprite Seel FRLG2810%—
Golduck FireRed and LeafGreen sprite Golduck FRLG33 or 355%—
Slowbro FireRed and LeafGreen sprite Slowbro FRLG33 or 355%—

Seafoam Islands B2F

Seafoam Islands B2F wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Psyduck FireRed and LeafGreen sprite Psyduck FRLG30 or 3240%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG30 or 3240%—
Seel FireRed and LeafGreen sprite Seel FRLG30 or 3220%—
Zubat FireRed and LeafGreen sprite Zubat FRLG22 or 2420%—
Golbat FireRed and LeafGreen sprite Golbat FRLG26 or 28 or 3010%—
Golduck FireRed and LeafGreen sprite Golduck FRLG32 or 3410%—
Slowbro FireRed and LeafGreen sprite Slowbro FRLG32 or 3410%—

Seafoam Islands B3F

Seafoam Islands B3F wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Seel FireRed and LeafGreen sprite Seel FRLG30 or 3240%—
Psyduck FireRed and LeafGreen sprite Psyduck FRLG30 or 3220%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG30 or 3220%—
Golduck FireRed and LeafGreen sprite Golduck FRLG32 or 3415%—
Slowbro FireRed and LeafGreen sprite Slowbro FRLG32 or 3415%—
Golbat FireRed and LeafGreen sprite Golbat FRLG26 or 28 or 3010%—
Zubat FireRed and LeafGreen sprite Zubat FRLG2410%—
Dewgong FireRed and LeafGreen sprite Dewgong FRLG32 or 345%—
Surfing
Seel FireRed and LeafGreen sprite Seel FRLG25-3560%—
Horsea FireRed and LeafGreen sprite Horsea FRLG25-3030%—
Krabby FireRed and LeafGreen sprite Krabby FRLG25-3030%—
Dewgong FireRed and LeafGreen sprite Dewgong FRLG35-405%—
Psyduck FireRed and LeafGreen sprite Psyduck FRLG30-404%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG30-404%—
Golduck FireRed and LeafGreen sprite Golduck FRLG35-401%—
Slowbro FireRed and LeafGreen sprite Slowbro FRLG35-401%—
Fishing — Old Rod
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5100%—
Fishing — Good Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1560%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1560%—
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1520%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1520%—
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5-1520%—
Fishing — Super Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG15-3080%—
Krabby FireRed and LeafGreen sprite Krabby FRLG15-3080%—
Gyarados FireRed and LeafGreen sprite Gyarados FRLG15-3516%—
Psyduck FireRed and LeafGreen sprite Psyduck FRLG15-254%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG15-254%—

Seafoam Islands B4F

Seafoam Islands B4F wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Seel FireRed and LeafGreen sprite Seel FRLG30 or 32 or 3450%—
Golbat FireRed and LeafGreen sprite Golbat FRLG26 or 28 or 3015%—
Golduck FireRed and LeafGreen sprite Golduck FRLG32 or 3415%—
Slowbro FireRed and LeafGreen sprite Slowbro FRLG32 or 3415%—
Dewgong FireRed and LeafGreen sprite Dewgong FRLG34 or 3610%—
Psyduck FireRed and LeafGreen sprite Psyduck FRLG3210%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG3210%—
Surfing
Seel FireRed and LeafGreen sprite Seel FRLG25-3560%—
Horsea FireRed and LeafGreen sprite Horsea FRLG25-3030%—
Krabby FireRed and LeafGreen sprite Krabby FRLG25-3030%—
Dewgong FireRed and LeafGreen sprite Dewgong FRLG35-405%—
Psyduck FireRed and LeafGreen sprite Psyduck FRLG30-404%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG30-404%—
Golduck FireRed and LeafGreen sprite Golduck FRLG35-401%—
Slowbro FireRed and LeafGreen sprite Slowbro FRLG35-401%—
Fishing — Old Rod
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5100%—
Fishing — Good Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1560%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1560%—
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1520%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1520%—
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5-1520%—
Fishing — Super Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG15-3080%—
Krabby FireRed and LeafGreen sprite Krabby FRLG15-3080%—
Gyarados FireRed and LeafGreen sprite Gyarados FRLG15-3516%—
Psyduck FireRed and LeafGreen sprite Psyduck FRLG15-254%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG15-254%—
Static encounter
Articuno FireRed and LeafGreen sprite Articuno FRLG50StaticOne-time scripted encounter in Seafoam Islands B4F.

Trainers

TrainerArea / positionTeamRewardNotes
Swimmer♂ Reece trainer spriteReeceSwimmer♂Route 19
Goldeen FireRed and LeafGreen sprite Goldeen Lv. 29 Horsea FireRed and LeafGreen sprite Horsea Lv. 29 Staryu FireRed and LeafGreen sprite Staryu Lv. 29
$116VS Seeker/rematch-capable. Map tile (15, 10); sight 3.
Swimmer♂ Richard trainer spriteRichardSwimmer♂Route 19
Tentacool FireRed and LeafGreen sprite Tentacool Lv. 30 Shellder FireRed and LeafGreen sprite Shellder Lv. 30
$120VS Seeker/rematch-capable. Map tile (10, 9); sight 3.
Swimmer♂ Tony trainer spriteTonySwimmer♂Route 19
Horsea FireRed and LeafGreen sprite Horsea Lv. 30 Horsea FireRed and LeafGreen sprite Horsea Lv. 30
$120VS Seeker/rematch-capable. Map tile (12, 17); sight 3.
Swimmer♂ Matthew trainer spriteMatthewSwimmer♂Route 19
Poliwag FireRed and LeafGreen sprite Poliwag Lv. 30 Poliwhirl FireRed and LeafGreen sprite Poliwhirl Lv. 30
$120VS Seeker/rematch-capable. Map tile (18, 33); sight 1.
Swimmer♂ Douglas trainer spriteDouglasSwimmer♂Route 19
Horsea FireRed and LeafGreen sprite Horsea Lv. 27 Tentacool FireRed and LeafGreen sprite Tentacool Lv. 27 Tentacool FireRed and LeafGreen sprite Tentacool Lv. 27 Goldeen FireRed and LeafGreen sprite Goldeen Lv. 27
$108VS Seeker/rematch-capable. Map tile (8, 27); sight 1.
Swimmer♂ David trainer spriteDavidSwimmer♂Route 19
Goldeen FireRed and LeafGreen sprite Goldeen Lv. 29 Shellder FireRed and LeafGreen sprite Shellder Lv. 29 Seaking FireRed and LeafGreen sprite Seaking Lv. 29
$116VS Seeker/rematch-capable. Map tile (16, 22); sight 6.
Swimmer♂ Axle trainer spriteAxleSwimmer♂Route 19
Tentacool FireRed and LeafGreen sprite Tentacool Lv. 27 Tentacool FireRed and LeafGreen sprite Tentacool Lv. 27 Staryu FireRed and LeafGreen sprite Staryu Lv. 27 Horsea FireRed and LeafGreen sprite Horsea Lv. 27 Tentacruel FireRed and LeafGreen sprite Tentacruel Lv. 27
$108VS Seeker/rematch-capable. Map tile (11, 47); sight 1.
Swimmer♀ Alice trainer spriteAliceSwimmer♀Route 19
Goldeen FireRed and LeafGreen sprite Goldeen Lv. 30 Seaking FireRed and LeafGreen sprite Seaking Lv. 30
$120VS Seeker/rematch-capable. Map tile (14, 48); sight 1.
Swimmer♀ Connie trainer spriteConnieSwimmer♀Route 19
Staryu FireRed and LeafGreen sprite Staryu Lv. 29 Staryu FireRed and LeafGreen sprite Staryu Lv. 29 Staryu FireRed and LeafGreen sprite Staryu Lv. 29
$116VS Seeker/rematch-capable. Map tile (12, 49); sight 1.
Swimmer♀ Anya trainer spriteAnyaSwimmer♀Route 19
Poliwag FireRed and LeafGreen sprite Poliwag Lv. 27 Goldeen FireRed and LeafGreen sprite Goldeen Lv. 27 Seaking FireRed and LeafGreen sprite Seaking Lv. 27 Goldeen FireRed and LeafGreen sprite Goldeen Lv. 27 Poliwag FireRed and LeafGreen sprite Poliwag Lv. 27
$108VS Seeker/rematch-capable. Map tile (9, 48); sight 1.
Sis And Bro Lia & Luc trainer spriteLia & LucSis And BroRoute 19
Goldeen FireRed and LeafGreen sprite Goldeen Lv. 30 Seaking FireRed and LeafGreen sprite Seaking Lv. 30
$120VS Seeker/rematch-capable. Map tile (8, 41); sight 1.
Sis And Bro Lia & Luc trainer spriteLia & LucSis And BroRoute 19
Goldeen FireRed and LeafGreen sprite Goldeen Lv. 30 Seaking FireRed and LeafGreen sprite Seaking Lv. 30
$120VS Seeker/rematch-capable. Map tile (9, 41); sight 1.
Swimmer♀ Melissa trainer spriteMelissaSwimmer♀Route 20
Poliwag FireRed and LeafGreen sprite Poliwag Lv. 31 Seaking FireRed and LeafGreen sprite Seaking Lv. 31
$124VS Seeker/rematch-capable. Map tile (8, 11); sight 3.
Picnicker Missy trainer spriteMissyPicnickerRoute 20
Goldeen FireRed and LeafGreen sprite Goldeen Lv. 31 Seaking FireRed and LeafGreen sprite Seaking Lv. 31
$620VS Seeker/rematch-capable. Map tile (16, 14); sight 1.
Swimmer♀ Nora trainer spriteNoraSwimmer♀Route 20
Shellder FireRed and LeafGreen sprite Shellder Lv. 30 Shellder FireRed and LeafGreen sprite Shellder Lv. 30 Cloyster FireRed and LeafGreen sprite Cloyster Lv. 30
$120VS Seeker/rematch-capable. Map tile (34, 7); sight 4.
Bird Keeper Roger trainer spriteRogerBird KeeperRoute 20
Fearow FireRed and LeafGreen sprite Fearow Lv. 30 Fearow FireRed and LeafGreen sprite Fearow Lv. 30 Pidgeotto FireRed and LeafGreen sprite Pidgeotto Lv. 30
$720VS Seeker/rematch-capable. Map tile (43, 9); sight 1.
Swimmer♂ Dean trainer spriteDeanSwimmer♂Route 20
Staryu FireRed and LeafGreen sprite Staryu Lv. 35
$140VS Seeker/rematch-capable. Map tile (23, 10); sight 1.
Picnicker Irene trainer spriteIrenePicnickerRoute 20
Tentacool FireRed and LeafGreen sprite Tentacool Lv. 30 Horsea FireRed and LeafGreen sprite Horsea Lv. 30 Seel FireRed and LeafGreen sprite Seel Lv. 30
$600VS Seeker/rematch-capable. Map tile (73, 16); sight 2.
Swimmer♂ Barry trainer spriteBarrySwimmer♂Route 20
Shellder FireRed and LeafGreen sprite Shellder Lv. 31 Cloyster FireRed and LeafGreen sprite Cloyster Lv. 31
$124VS Seeker/rematch-capable. Map tile (111, 9); sight 1.
Swimmer♂ Darrin trainer spriteDarrinSwimmer♂Route 20
Horsea FireRed and LeafGreen sprite Horsea Lv. 28 Horsea FireRed and LeafGreen sprite Horsea Lv. 28 Seadra FireRed and LeafGreen sprite Seadra Lv. 28 Horsea FireRed and LeafGreen sprite Horsea Lv. 28
$112VS Seeker/rematch-capable. Map tile (106, 11); sight 1.
Swimmer♀ Shirley trainer spriteShirleySwimmer♀Route 20
Seadra FireRed and LeafGreen sprite Seadra Lv. 30 Horsea FireRed and LeafGreen sprite Horsea Lv. 30 Seadra FireRed and LeafGreen sprite Seadra Lv. 30
$120VS Seeker/rematch-capable. Map tile (93, 10); sight 5.
Swimmer♀ Tiffany trainer spriteTiffanySwimmer♀Route 20
Seaking FireRed and LeafGreen sprite Seaking Lv. 35
$140VS Seeker/rematch-capable. Map tile (54, 11); sight 1.
Fisherman Ronald trainer spriteRonaldFishermanRoute 21 North
Seaking FireRed and LeafGreen sprite Seaking Lv. 28 Goldeen FireRed and LeafGreen sprite Goldeen Lv. 28 Seaking FireRed and LeafGreen sprite Seaking Lv. 28 Seaking FireRed and LeafGreen sprite Seaking Lv. 28
$1008VS Seeker/rematch-capable. Map tile (7, 27); sight 0.
Fisherman Wade trainer spriteWadeFishermanRoute 21 North
Magikarp FireRed and LeafGreen sprite Magikarp Lv. 27 Magikarp FireRed and LeafGreen sprite Magikarp Lv. 27 Magikarp FireRed and LeafGreen sprite Magikarp Lv. 27 Magikarp FireRed and LeafGreen sprite Magikarp Lv. 27 Magikarp FireRed and LeafGreen sprite Magikarp Lv. 27 Magikarp FireRed and LeafGreen sprite Magikarp Lv. 27
$972VS Seeker/rematch-capable. Map tile (16, 26); sight 0.
Swimmer♂ Spencer trainer spriteSpencerSwimmer♂Route 21 North
Seadra FireRed and LeafGreen sprite Seadra Lv. 33 Tentacruel FireRed and LeafGreen sprite Tentacruel Lv. 33
$132VS Seeker/rematch-capable. Map tile (12, 44); sight 1.
Sis And Bro Lil & Ian trainer spriteLil & IanSis And BroRoute 21 North
Seadra FireRed and LeafGreen sprite Seadra Lv. 33 Starmie FireRed and LeafGreen sprite Starmie Lv. 33
$132VS Seeker/rematch-capable. Map tile (14, 35); sight 1.
Sis And Bro Lil & Ian trainer spriteLil & IanSis And BroRoute 21 North
Seadra FireRed and LeafGreen sprite Seadra Lv. 33 Starmie FireRed and LeafGreen sprite Starmie Lv. 33
$132VS Seeker/rematch-capable. Map tile (15, 35); sight 1.
Fisherman Claude trainer spriteClaudeFishermanRoute 21 South
Shellder FireRed and LeafGreen sprite Shellder Lv. 31 Cloyster FireRed and LeafGreen sprite Cloyster Lv. 31
$1116VS Seeker/rematch-capable. Map tile (11, 8); sight 0.
Fisherman Nolan trainer spriteNolanFishermanRoute 21 South
Seaking FireRed and LeafGreen sprite Seaking Lv. 33 Goldeen FireRed and LeafGreen sprite Goldeen Lv. 33
$1188VS Seeker/rematch-capable. Map tile (14, 15); sight 0.
Swimmer♂ Jack trainer spriteJackSwimmer♂Route 21 South
Starmie FireRed and LeafGreen sprite Starmie Lv. 37
$148VS Seeker/rematch-capable. Map tile (15, 24); sight 3.
Swimmer♂ Jerome trainer spriteJeromeSwimmer♂Route 21 South
Staryu FireRed and LeafGreen sprite Staryu Lv. 33 Wartortle FireRed and LeafGreen sprite Wartortle Lv. 33
$132VS Seeker/rematch-capable. Map tile (15, 38); sight 3.
Swimmer♂ Roland trainer spriteRolandSwimmer♂Route 21 South
Poliwhirl FireRed and LeafGreen sprite Poliwhirl Lv. 32 Tentacool FireRed and LeafGreen sprite Tentacool Lv. 32 Seadra FireRed and LeafGreen sprite Seadra Lv. 32
$128VS Seeker/rematch-capable. Map tile (10, 29); sight 4.

Items And Hidden Items

ItemTypeArea / directionCoordinateRequirement
StardustHidden itemRoute 20: Hidden in Route 20; press A on the tile around (23, 6).23, 6Use the Itemfinder or check the described tile.
PearlHidden itemRoute 21 North: Hidden in Route 21 North; press A on the tile around (17, 42).17, 42Use the Itemfinder or check the described tile.
Ice HealVisible item ballSeafoam Islands 1F: Visible item ball in Seafoam Islands 1F; check around tile (11, 8).11, 8HIDE SEAFOAM ISLANDS 1F ICE HEAL
ReviveVisible item ballSeafoam Islands B1F: Visible item ball in Seafoam Islands B1F; check around tile (24, 14).24, 14HIDE SEAFOAM ISLANDS B1F REVIVE
Water StoneVisible item ballSeafoam Islands B1F: Visible item ball in Seafoam Islands B1F; check around tile (19, 18).19, 18HIDE SEAFOAM ISLANDS B1F WATER STONE
Big PearlVisible item ballSeafoam Islands B2F: Visible item ball in Seafoam Islands B2F; check around tile (18, 15).18, 15HIDE SEAFOAM ISLANDS B2F BIG PEARL
NuggetHidden itemSeafoam Islands B3F: Hidden in Seafoam Islands B3F; press A on the tile around (5, 12).5, 12Use the Itemfinder or check the described tile.
Ultra BallVisible item ballSeafoam Islands B4F: Visible item ball in Seafoam Islands B4F; check around tile (22, 19).22, 19HIDE SEAFOAM ISLANDS B4F ULTRA BALL
Water StoneHidden itemSeafoam Islands B4F: Hidden in Seafoam Islands B4F; press A on the tile around (13, 8).13, 8Use the Itemfinder or check the described tile.

Boss Strategy

No major boss card is assigned to this section.

Completion Checklist

  • Clear the route plan for Routes 19, 20, 21, and Seafoam Islands before moving to the next section.
  • Check the wild table for FireRed/LeafGreen version splits, rod methods, Surf, Rock Smash, static Pokemon, gifts, trades, and event-only rows when present.
  • Defeat or intentionally skip optional trainers; use VS Seeker notes where rematches are available.
  • Sweep visible and hidden item rows, including key items, HMs, TMs, berries, fossils, and scripted gifts.
  • Review boss cards and heal before any Rival, Gym Leader, Rocket Admin, Elite Four, Champion, or legendary encounter listed above.

Sources

  • pret/pokefirered: src/data/wild_encounters.json, src/data/trainers.h, src/data/trainer_parties.h, data/maps/*/map.json, data/maps/*/scripts.inc, data/scripts/item_ball_scripts.inc, and graphics/trainers/front_pics.
  • Encounter odds use the FR/LG slot rates: land 20/20/10/10/10/10/5/5/4/4/1/1, Surf and Rock Smash 60/30/5/4/1, Old Rod 70/30, Good Rod 60/20/20, and Super Rod 40/40/15/4/1.
  • Generation III mechanics apply throughout: abilities, natures, held items, double battles, and post-game National Dex data are active in these remakes.

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