Phase 3 section
Pokemon Emerald Mauville City and Wally Walkthrough
Dynamo Badge Mauville City and Wally section for the Pokemon Emerald walkthrough with wild Pokemon, trainers, items, coordinates, requirements, and strategy notes.
Mauville City and Wally is a dedicated section page for Phase 3: Dynamo Badge. Get the Mach or Acro Bike, beat Wally at the Gym door, collect Rock Smash, and set up for Wattson.
Trainer Art
Key Emerald trainers for this section are shown here so boss, rival, villain, and Frontier pages have the right character context.
Route Plan
Primary source maps covered here: Mauville City, Mauville City Bike Shop, Mauville City Game Corner, Mauville City House1, Mauville City House2, Mauville City Mart. Follow this page as its own checklist, then return to the phase index when the wild Pokemon, trainers, items, and boss notes are complete.
Wild Pokemon
No wild Pokemon encounter table is sourced for this section.
Trainers
| Order | Area | Trainer | Team | Reward | Notes |
|---|---|---|---|---|---|
| 1 | Mauville City | Pokemon Trainer Wally | 960 | Story/route battle. |
Items
| Item | Type | Location | Requirement / flag context |
|---|---|---|---|
| X Speed | Visible | Mauville City, on the southeast side at map coordinates (28,19) | MAUVILLE CITY X SPEED |
| Basement Key | Gift / reward | Mauville City, Wattson | NPC gift or story reward |
| TM24 Thunderbolt | Gift / reward | Mauville City, Completed New Mauville | NPC gift or story reward |
| Mach Bike | Gift / reward | Mauville City Bike Shop, choose or switch bikes at Rydel's Cycles | One bike at a time; exchange here whenever needed |
| Acro Bike | Gift / reward | Mauville City Bike Shop, choose or switch bikes at Rydel's Cycles | One bike at a time; exchange here whenever needed |
| HM06 Rock Smash | Gift / reward | Mauville City House1, Rock Smash Dude | NPC gift or story reward |
| Coin Case | Gift / reward | Mauville City House2, Accept Trade | NPC gift or story reward |
Boss Strategy
Pokemon Trainer Wally
Reward: 960. Heal first, check the listed levels, and bring at least one direct counter plus a backup pivot.
| Pokemon | Level | Held item | Moves |
|---|---|---|---|
 Ralts | Lv. 16 | - | Default level-up moves |
Completion Checklist
- Clear the main objective: Get the Mach or Acro Bike, beat Wally at the Gym door, collect Rock Smash, and set up for Wattson.
- Review every wild Pokemon method listed for the section.
- Fight or deliberately skip every trainer listed in route order.
- Collect visible items, hidden items, and scripted rewards you care about before moving on.
- Save and heal before the boss battle.
Source Notes
- Source of truth: pret/pokeemerald
wild_encounters.json, mapmap.jsonobject/background events, mapscripts.inc,trainers.h, andtrainer_parties.h. - Encounter odds are aggregated by species and method from Emerald slot rates. Most rows are marked Any time because Emerald has no normal day/night wild encounter split.
- Pokemon table sprites use locally cached Emerald front sprites from
/guides/pokemon-emerald-pokemon-sprites.json. - Trainer art on this page uses the local Emerald trainer manifest and reused Hoenn character art where Emerald-specific artwork is not available.