Phase 3 section
Pokemon FireRed and LeafGreen Vermilion Gym Walkthrough
Vermilion Gym section for the FireRed and LeafGreen walkthrough with source-backed wild Pokemon, trainers, items, hidden items, bosses, and route notes.
Solve the trash-can switch puzzle and beat Lt. Surge. This page is a standalone section for Phase 3: Thunder Badge, with FireRed/LeafGreen source data for encounters, trainers, items, hidden items, and boss routing.
Source maps
Vermilion City Gym.
Wild rows0 Trainers4 Items1
Route plan
Bring Diglett or another Ground type from Diglett's Cave if Raichu is a problem.
Route Notes
- The second switch is adjacent to the first. If you choose wrong, the puzzle resets.
Wild Pokemon
No wild Pokemon or static/gift Pokemon rows are sourced for this section.
Trainers
| Trainer | Area / position | Team | Reward | Notes |
|---|---|---|---|---|
 Lt. SurgeLeader | Vermilion City Gym | $2400 | One-time or scripted battle. Map tile (5, 2); sight 0. | |
 BailyEngineer | Vermilion City Gym | $1008 | One-time or scripted battle. Map tile (2, 11); sight 3. | |
 DwayneSailor | Vermilion City Gym | $672 | One-time or scripted battle. Map tile (8, 13); sight 3. | |
 TuckerGentleman | Vermilion City Gym | $1656 | One-time or scripted battle. Map tile (7, 8); sight 3. |
Items And Hidden Items
| Item | Type | Area / direction | Coordinate | Requirement |
|---|---|---|---|---|
| TM34 Shock Wave | Gift/scripted | Vermilion City Gym: Scripted reward from Event Script Give TM 34. | - | Scripted reward from Event Script Give TM 34. |
Boss Strategy
| Boss / branch | Team | Reward | Danger notes | Practical counters |
|---|---|---|---|---|
| Lt. SurgeLeader | $2400 | Raichu's Shock Wave never misses and Double Team can waste turns. | Diglett's Cave is the clean answer; Ground types ignore Electric attacks. |
Completion Checklist
- Clear the route plan for Vermilion 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, andgraphics/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.