Pokedex Randomizer

Phase 10 section

Pokemon FireRed and LeafGreen Seven Island, Sevault Canyon, Tanoby Key, Tanoby Ruins, Trainer Tower, and Altering Cave Walkthrough

Seven Island, Sevault Canyon, Tanoby Key, Tanoby Ruins, Trainer Tower, and Altering Cave 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

Complete the long Seven Island routes, solve Tanoby Key, unlock Tanoby Ruins Unown, climb Trainer Tower, and document Altering Cave. This page is a standalone section for Phase 10: Post-Game Sevii Islands, with FireRed/LeafGreen source data for encounters, trainers, items, hidden items, and boss routing.

Source maps

Seven Island, Seven Island Harbor, Seven Island House Room 1, Seven Island House Room 2, Seven Island Mart, Seven Island Trainer Tower, Trainer Tower Lobby, Trainer Tower 1F, Trainer Tower 2F, Trainer Tower 3F, Trainer Tower 4F, Trainer Tower 5F, Trainer Tower 6F, and Trainer Tower 7F, and 16 more map files.

Wild rows71 Trainers20 Items13

Route plan

Tanoby Key is a Strength boulder puzzle. Solving it activates Unown encounters in the Tanoby Ruins chambers.

Route Notes

  • Altering Cave is present in normal data, but its alternate Mystery Gift encounter sets were event-dependent; normal retail play leaves it mostly as Zubat.

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.

Seven Island Sevault Canyon

Seven Island Sevault Canyon wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Geodude FireRed and LeafGreen sprite Geodude FRLG4620%—
Phanpy FireRed and LeafGreen sprite Phanpy FRLG1520%—
Cubone FireRed and LeafGreen sprite Cubone FRLG4610%—
Fearow FireRed and LeafGreen sprite Fearow FRLG5010%—
Marowak FireRed and LeafGreen sprite Marowak FRLG5210%—
Meowth FireRed and LeafGreen sprite Meowth FRLG4310%—
Fearow FireRed and LeafGreen sprite Fearow FRLG505%—
Larvitar FireRed and LeafGreen sprite Larvitar FRLG15 or 205%—
Onix FireRed and LeafGreen sprite Onix FRLG545%—
Persian FireRed and LeafGreen sprite Persian FRLG49 or 525%—
Skarmory FireRed and LeafGreen sprite Skarmory FRLG305%—
Rock Smash
Geodude FireRed and LeafGreen sprite Geodude FRLG25-4065%—
Graveler FireRed and LeafGreen sprite Graveler FRLG30-5035%—

Seven Island Sevault Canyon Entrance

Seven Island Sevault Canyon Entrance wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Sentret FireRed and LeafGreen sprite Sentret FRLG10 or 1530%—
Spearow FireRed and LeafGreen sprite Spearow FRLG4420%—
Fearow FireRed and LeafGreen sprite Fearow FRLG48 or 5015%—
Phanpy FireRed and LeafGreen sprite Phanpy FRLG10 or 1515%—
Meowth FireRed and LeafGreen sprite Meowth FRLG4110%—
Persian FireRed and LeafGreen sprite Persian FRLG47 or 505%—
Psyduck FireRed and LeafGreen sprite Psyduck FRLG415%—
Slowpoke FireRed and LeafGreen sprite Slowpoke FRLG415%—

Seven Island Tanoby Ruins

Seven Island Tanoby Ruins wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Surfing
Tentacool FireRed and LeafGreen sprite Tentacool FRLG5-3590%—
Mantine FireRed and LeafGreen sprite Mantine FRLG35-405%—
Tentacool FireRed and LeafGreen sprite Tentacool FRLG35-405%—
Tentacruel FireRed and LeafGreen sprite Tentacruel FRLG35-405%—
Fishing — Old Rod
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5100%—
Fishing — Good Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1580%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1580%—
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%—
Qwilfish FireRed and LeafGreen sprite Qwilfish FRLG15-2540%—
Remoraid FireRed and LeafGreen sprite Remoraid 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%—

Seven Island Tanoby Ruins Dilford Chamber

Seven Island Tanoby Ruins Dilford Chamber wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Unown FireRed and LeafGreen sprite Unown FRLG2540%—

Seven Island Tanoby Ruins Liptoo Chamber

Seven Island Tanoby Ruins Liptoo Chamber wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Unown FireRed and LeafGreen sprite Unown FRLG2540%—

Seven Island Tanoby Ruins Monean Chamber

Seven Island Tanoby Ruins Monean Chamber wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Unown FireRed and LeafGreen sprite Unown FRLG2540%—

Seven Island Tanoby Ruins Rixy Chamber

Seven Island Tanoby Ruins Rixy Chamber wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Unown FireRed and LeafGreen sprite Unown FRLG2540%—

Seven Island Tanoby Ruins Scufib Chamber

Seven Island Tanoby Ruins Scufib Chamber wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Unown FireRed and LeafGreen sprite Unown FRLG2540%—

Seven Island Tanoby Ruins Viapois Chamber

Seven Island Tanoby Ruins Viapois Chamber wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Unown FireRed and LeafGreen sprite Unown FRLG2540%—

Seven Island Tanoby Ruins Weepth Chamber

Seven Island Tanoby Ruins Weepth Chamber wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Unown FireRed and LeafGreen sprite Unown FRLG2540%—

Seven Island Trainer Tower

Seven Island Trainer Tower wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Surfing
Tentacool FireRed and LeafGreen sprite Tentacool FRLG5-3590%—
Mantine FireRed and LeafGreen sprite Mantine FRLG35-405%—
Tentacool FireRed and LeafGreen sprite Tentacool FRLG35-405%—
Tentacruel FireRed and LeafGreen sprite Tentacruel FRLG35-405%—
Fishing — Old Rod
Magikarp FireRed and LeafGreen sprite Magikarp FRLG5100%—
Fishing — Good Rod
Horsea FireRed and LeafGreen sprite Horsea FRLG5-1580%—
Krabby FireRed and LeafGreen sprite Krabby FRLG5-1580%—
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%—
Qwilfish FireRed and LeafGreen sprite Qwilfish FRLG15-2540%—
Remoraid FireRed and LeafGreen sprite Remoraid 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%—

Six Island Altering Cave

Six Island Altering Cave wild Pokemon by method, games, levels, encounter rates, and requirements
PokémonGamesLevelsRateNotes
Grass / cave floor
Aipom FireRed and LeafGreen sprite Aipom FRLG18 or 20 or 22 or 24 or 26 or 28100%—
Houndour FireRed and LeafGreen sprite Houndour FRLG12 or 14 or 16 or 18 or 20 or 22100%—
Mareep FireRed and LeafGreen sprite Mareep FRLG3 or 5 or 7 or 9 or 11 or 13100%—
Pineco FireRed and LeafGreen sprite Pineco FRLG19 or 21-23 or 25 or 27 or 29100%—
Shuckle FireRed and LeafGreen sprite Shuckle FRLG18 or 20 or 22 or 24 or 26 or 28100%—
Smeargle FireRed and LeafGreen sprite Smeargle FRLG18 or 20 or 22 or 24 or 26 or 28100%—
Stantler FireRed and LeafGreen sprite Stantler FRLG18 or 20 or 22 or 24 or 26 or 28100%—
Teddiursa FireRed and LeafGreen sprite Teddiursa FRLG18 or 20 or 22 or 24 or 26 or 28100%—
Zubat FireRed and LeafGreen sprite Zubat FRLG6 or 8 or 10 or 12 or 14 or 16100%—

Trainers

TrainerArea / positionTeamRewardNotes
Psychic Dario trainer spriteDarioPsychicSeven Island Trainer Tower
Girafarig FireRed and LeafGreen sprite Girafarig Lv. 52 | Crunch / Psybeam / Odor Sleuth / Agility
$1040VS Seeker/rematch-capable. Map tile (56, 26); sight 1.
Psychic Rodette trainer spriteRodettePsychicSeven Island Trainer Tower
Natu FireRed and LeafGreen sprite Natu Lv. 48 | Night Shade / Confuse Ray / Wish / Future Sight Drowzee FireRed and LeafGreen sprite Drowzee Lv. 48 | Psychic / Disable / Psych Up / Future Sight Hypno FireRed and LeafGreen sprite Hypno Lv. 50 | Psychic / Hypnosis / Psych Up / Future Sight
$1000VS Seeker/rematch-capable. Map tile (56, 29); sight 1.
Aroma Lady Miah trainer spriteMiahAroma LadySeven Island Sevault Canyon Entrance
Bellossom FireRed and LeafGreen sprite Bellossom Lv. 50 Bellossom FireRed and LeafGreen sprite Bellossom Lv. 50
$1400VS Seeker/rematch-capable. Map tile (12, 6); sight 5.
Young Couple Eve & Jon trainer spriteEve & JonYoung CoupleSeven Island Sevault Canyon Entrance
Golduck FireRed and LeafGreen sprite Golduck Lv. 50 Psyduck FireRed and LeafGreen sprite Psyduck Lv. 50
$1400VS Seeker/rematch-capable. Map tile (3, 34); sight 1.
Young Couple Eve & Jon trainer spriteEve & JonYoung CoupleSeven Island Sevault Canyon Entrance
Golduck FireRed and LeafGreen sprite Golduck Lv. 50 Psyduck FireRed and LeafGreen sprite Psyduck Lv. 50
$1400VS Seeker/rematch-capable. Map tile (4, 34); sight 1.
Pokemon Ranger Nicolas trainer spriteNicolasPokemon RangerSeven Island Sevault Canyon Entrance
Weepinbell FireRed and LeafGreen sprite Weepinbell Lv. 51 | Razor Leaf / Acid / Sweet Scent / Wrap Victreebel FireRed and LeafGreen sprite Victreebel Lv. 51 | Razor Leaf / Acid / Sleep Powder / Stun Spore
$1836VS Seeker/rematch-capable. Map tile (11, 26); sight 2.
Pokemon Ranger Madeline trainer spriteMadelinePokemon RangerSeven Island Sevault Canyon Entrance
Gloom FireRed and LeafGreen sprite Gloom Lv. 51 | Petal Dance / Acid / Sweet Scent / Poisonpowder Vileplume FireRed and LeafGreen sprite Vileplume Lv. 51 | Petal Dance / Moonlight / Acid / Stun Spore
$1836VS Seeker/rematch-capable. Map tile (10, 26); sight 2.
Juggler Mason trainer spriteMasonJugglerSeven Island Sevault Canyon Entrance
Voltorb FireRed and LeafGreen sprite Voltorb Lv. 47 | Swift / Light Screen / Spark / Sonicboom Pineco FireRed and LeafGreen sprite Pineco Lv. 47 | Spikes / Bide / Rapid Spin / Take Down Voltorb FireRed and LeafGreen sprite Voltorb Lv. 47 | Swift / Light Screen / Spark / Sonicboom Pineco FireRed and LeafGreen sprite Pineco Lv. 47 | Spikes / Bide / Rapid Spin / Explosion
$1880VS Seeker/rematch-capable. Map tile (11, 17); sight 1.
Crush Girl Cyndy trainer spriteCyndyCrush GirlSeven Island Sevault Canyon
Primeape FireRed and LeafGreen sprite Primeape Lv. 48 | Held: Black Belt Hitmontop FireRed and LeafGreen sprite Hitmontop Lv. 48 | Held: Black Belt Machoke FireRed and LeafGreen sprite Machoke Lv. 48 | Held: Black Belt
$1152VS Seeker/rematch-capable. Map tile (13, 43); sight 2.
Tamer Evan trainer spriteEvanTamerSeven Island Sevault Canyon
Sandslash FireRed and LeafGreen sprite Sandslash Lv. 48 Lickitung FireRed and LeafGreen sprite Lickitung Lv. 48 Ursaring FireRed and LeafGreen sprite Ursaring Lv. 49
$1960VS Seeker/rematch-capable. Map tile (13, 36); sight 2.
Pokemon Ranger Jackson trainer spriteJacksonPokemon RangerSeven Island Sevault Canyon
Tangela FireRed and LeafGreen sprite Tangela Lv. 49 | Slam / Mega Drain / Bind / Ingrain Exeggcute FireRed and LeafGreen sprite Exeggcute Lv. 49 | Confusion / Poisonpowder / Barrage / Reflect Exeggutor FireRed and LeafGreen sprite Exeggutor Lv. 49 | Confusion / Egg Bomb / Sleep Powder / Stomp
$1764VS Seeker/rematch-capable. Map tile (3, 35); sight 3.
Pokemon Ranger Katelyn trainer spriteKatelynPokemon RangerSeven Island Sevault Canyon
Chansey FireRed and LeafGreen sprite Chansey Lv. 52 | Egg Bomb / Defense Curl / Minimize / Softboiled
$1872VS Seeker/rematch-capable. Map tile (3, 36); sight 3.
Cooltrainer Leroy trainer spriteLeroyCooltrainerSeven Island Sevault Canyon
Rhydon FireRed and LeafGreen sprite Rhydon Lv. 47 | Take Down / Horn Drill / Rock Blast / Scary Face Slowbro FireRed and LeafGreen sprite Slowbro Lv. 48 | Psychic / Headbutt / Amnesia / Disable Kangaskhan FireRed and LeafGreen sprite Kangaskhan Lv. 47 | Dizzy Punch / Bite / Endure / Reversal Machoke FireRed and LeafGreen sprite Machoke Lv. 48 | Cross Chop / Vital Throw / Revenge / Seismic Toss Ursaring FireRed and LeafGreen sprite Ursaring Lv. 50 | Slash / Faint Attack / Snore / Rest
$1800VS Seeker/rematch-capable. Map tile (7, 56); sight 1.
Cooltrainer Michelle trainer spriteMichelleCooltrainerSeven Island Sevault Canyon
Persian FireRed and LeafGreen sprite Persian Lv. 47 | Slash / Screech / Faint Attack / Bite Dewgong FireRed and LeafGreen sprite Dewgong Lv. 47 | Ice Beam / Take Down / Icy Wind / Growl Ninetales FireRed and LeafGreen sprite Ninetales Lv. 48 | Flamethrower / Confuse Ray / Will-O-Wisp / Grudge Rapidash FireRed and LeafGreen sprite Rapidash Lv. 48 | Bounce / Agility / Fire Spin / Take Down Girafarig FireRed and LeafGreen sprite Girafarig Lv. 50 | Crunch / Psybeam / Stomp / Odor Sleuth
$1800VS Seeker/rematch-capable. Map tile (11, 63); sight 1.
Cool Couple Lex & Nya trainer spriteLex & NyaCool CoupleSeven Island Sevault Canyon
Miltank FireRed and LeafGreen sprite Miltank Lv. 52 | Body Slam / Milk Drink / Growl / Defense Curl Tauros FireRed and LeafGreen sprite Tauros Lv. 52 | Thrash / Horn Attack / Pursuit / Swagger
$1248VS Seeker/rematch-capable. Map tile (14, 13); sight 1.
Cool Couple Lex & Nya trainer spriteLex & NyaCool CoupleSeven Island Sevault Canyon
Miltank FireRed and LeafGreen sprite Miltank Lv. 52 | Body Slam / Milk Drink / Growl / Defense Curl Tauros FireRed and LeafGreen sprite Tauros Lv. 52 | Thrash / Horn Attack / Pursuit / Swagger
$1248VS Seeker/rematch-capable. Map tile (14, 14); sight 1.
Ruin Maniac Brandon trainer spriteBrandonRuin ManiacSeven Island Tanoby Ruins
Onix FireRed and LeafGreen sprite Onix Lv. 50
$2400VS Seeker/rematch-capable. Map tile (35, 7); sight 1.
Ruin Maniac Benjamin trainer spriteBenjaminRuin ManiacSeven Island Tanoby Ruins
Geodude FireRed and LeafGreen sprite Geodude Lv. 48 | Earthquake / Rock Blast / Rollout / Selfdestruct Graveler FireRed and LeafGreen sprite Graveler Lv. 48 | Earthquake / Rock Blast / Rock Throw / Selfdestruct Graveler FireRed and LeafGreen sprite Graveler Lv. 48 | Earthquake / Rock Blast / Rock Throw / Selfdestruct
$2304VS Seeker/rematch-capable. Map tile (121, 11); sight 1.
Painter Edna trainer spriteEdnaPainterSeven Island Tanoby Ruins
Smeargle FireRed and LeafGreen sprite Smeargle Lv. 50 | Fake Out / Extremespeed / Protect / Quick Attack
$800VS Seeker/rematch-capable. Map tile (85, 8); sight 1.
Gentleman Clifford trainer spriteCliffordGentlemanSeven Island Tanoby Ruins
Marowak FireRed and LeafGreen sprite Marowak Lv. 49 Golduck FireRed and LeafGreen sprite Golduck Lv. 49
$3528VS Seeker/rematch-capable. Map tile (85, 5); sight 1.

Items And Hidden Items

ItemTypeArea / directionCoordinateRequirement
Cheri BerryHidden itemSeven Island Sevault Canyon: Hidden in Seven Island Sevault Canyon; press A on the tile around (15, 66).15, 66Use the Itemfinder or check the described tile.
King's RockVisible item ballSeven Island Sevault Canyon: Visible item ball in Seven Island Sevault Canyon; check around tile (18, 45).18, 45HIDE SEVEN ISLAND SEVAULT CANYON KINGS ROCK
Max ElixirVisible item ballSeven Island Sevault Canyon: Visible item ball in Seven Island Sevault Canyon; check around tile (7, 38).7, 38HIDE SEVEN ISLAND SEVAULT CANYON MAX ELIXIR
NuggetVisible item ballSeven Island Sevault Canyon: Visible item ball in Seven Island Sevault Canyon; check around tile (17, 23).17, 23HIDE SEVEN ISLAND SEVAULT CANYON NUGGET
Rawst BerryHidden itemSeven Island Sevault Canyon Entrance: Hidden in Seven Island Sevault Canyon Entrance; press A on the tile around (8, 29).8, 29Use the Itemfinder or check the described tile.
Lucky PunchVisible item ballSeven Island Sevault Canyon House: Visible item ball in Seven Island Sevault Canyon House; check around tile (6, 4).6, 4HIDE SEVEN ISLAND SEVAULT CANYON HOUSE LUCKY PUNCH
Heart ScaleHidden itemSeven Island Tanoby Ruins: Hidden in Seven Island Tanoby Ruins; press A on the tile around (33, 10).33, 10Use the Itemfinder or check the described tile.
Heart ScaleHidden itemSeven Island Tanoby Ruins: Hidden in Seven Island Tanoby Ruins; press A on the tile around (86, 9).86, 9Use the Itemfinder or check the described tile.
Heart ScaleHidden itemSeven Island Tanoby Ruins: Hidden in Seven Island Tanoby Ruins; press A on the tile around (125, 5).125, 5Use the Itemfinder or check the described tile.
Heart ScaleHidden itemSeven Island Tanoby Ruins: Hidden in Seven Island Tanoby Ruins; press A on the tile around (8, 2).8, 2Use the Itemfinder or check the described tile.
Big PearlHidden itemSeven Island Trainer Tower: Hidden in Seven Island Trainer Tower; press A on the tile around (49, 27).49, 27Use the Itemfinder or check the described tile.
Nanab BerryHidden itemSeven Island Trainer Tower: Hidden in Seven Island Trainer Tower; press A on the tile around (59, 32).59, 32Use the Itemfinder or check the described tile.
PearlHidden itemSeven Island Trainer Tower: Hidden in Seven Island Trainer Tower; press A on the tile around (47, 30).47, 30Use 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 Seven Island, Sevault Canyon, Tanoby Key, Tanoby Ruins, Trainer Tower, and Altering Cave 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.

Related articles

Pokemon FireRed and LeafGreen Walkthrough HubPhase 10: Post-Game Sevii IslandsPrevious: Six Island, Pattern Bush, Outcast Island, Ruin Valley, and Dotted HoleNext: Cerulean Cave and Mewtwo