Phase 1 section

Pokemon FireRed and LeafGreen Pewter City and Pewter Gym Walkthrough

Pewter City and Pewter Gym 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

Visit the museum, clear Brock's Gym trainer, beat Brock, and leave with the first badge. This page is a standalone section for Phase 1: Boulder Badge, with FireRed/LeafGreen source data for encounters, trainers, items, hidden items, and boss routing.

Source maps

Pewter City, Pewter City House 1, Pewter City House 2, Pewter City Mart, Pewter City Museum 1F, Pewter City Museum 2F, and Pewter City Gym.

Wild rows0 Trainers2 Items3

Route plan

Bulbasaur and Squirtle should go straight in near Lv. 12-14. Charmander wants Metal Claw and usually another trained teammate.

Route Notes

  • The Old Amber is visible in the museum source but requires Cut from the side entrance later.

Wild Pokemon

No wild Pokemon or static/gift Pokemon rows are sourced for this section.

Trainers

TrainerArea / positionTeamRewardNotes
Leader Brock trainer spriteBrockLeaderPewter City Gym$1400One-time or scripted battle. Map tile (6, 5); sight 0.
Camper Liam trainer spriteLiamCamperPewter City Gym$220One-time or scripted battle. Map tile (3, 8); sight 4.

Items And Hidden Items

ItemTypeArea / directionCoordinateRequirement
Poke BallHidden itemPewter City: Hidden in Pewter City; press A on the tile around (6, 3).6, 3Use the Itemfinder or check the described tile.
TM39 Rock TombGift/scriptedPewter City Gym: Scripted reward from Event Script Give TM 39.-Scripted reward from Event Script Give TM 39.
Old AmberGift/scriptedPewter City Museum 1F: Scripted reward from Event Script Old Amber Scientist.-Scripted reward from Event Script Old Amber Scientist.

Boss Strategy

Boss / branchTeamRewardDanger notesPractical counters
Leader Brock trainer spriteBrockLeader$1400Rock Tomb can punish Charmander and Flying catches.Use Bulbasaur or Squirtle directly; Charmander should lean on Metal Claw and trained Route 22 support.

Completion Checklist

  • Clear the route plan for Pewter City and Pewter Gym 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.