Phase 10 section
Pokemon Emerald Battle Arena - Arena Tycoon Greta Walkthrough
Battle Arena - Arena Tycoon Greta section for the Pokemon Emerald walkthrough with wild Pokemon, trainers, items, coordinates, requirements, and strategy notes.
Battle Arena - Arena Tycoon Greta is a dedicated section page for Phase 10: Post-Game + Battle Frontier. Win three-turn judged battles and prepare for Greta's Guts/status pressure.
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: Battle Frontier Battle Arena Lobby, Battle Frontier Battle Arena Corridor, Battle Frontier Battle Arena Battle Room. 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
No mandatory trainer battles are sourced for this section.
Items
No visible, hidden, or scripted item pickups are sourced for this section.
Frontier Brain Rules
Facility: Three-turn battles judged by Mind, Skill, and Body if neither side faints.
Symbol: Guts Symbol. Silver challenge appears when the stored streak plus the facility offset reaches 28; in practical play this is after 27 wins/rooms/events in facilities with offset 1 and after 28 in facilities with offset 0. Gold appears at source value 56.
Level mode: Level 50 uses Lv. 50. Open Level uses the highest level in the player's selected party, with a minimum of Lv. 60, from GetFrontierEnemyMonLevel().
Silver Symbol available party
The player faces all three listed Pokemon in this facility's Brain battle.
| Pokemon | Held item | Nature | Fixed IV | EVs HP/Atk/Def/Spe/SpA/SpD | Moves |
|---|---|---|---|---|---|
 Heracross | Salac Berry | Jolly | 20 | 106/152/0/152/0/100 | Megahorn, Rock Tomb, Endure, Reversal |
 Umbreon | Leftovers | Calm | 20 | 152/0/100/0/152/106 | Body Slam, Confuse Ray, Psychic, Faint Attack |
 Shedinja | Bright Powder | Adamant | 20 | 0/252/6/252/0/0 | Shadow Ball, Return, Confuse Ray, Aerial Ace |
Gold Symbol available party
The player faces all three listed Pokemon in this facility's Brain battle.
| Pokemon | Held item | Nature | Fixed IV | EVs HP/Atk/Def/Spe/SpA/SpD | Moves |
|---|---|---|---|---|---|
| Umbreon | Chesto Berry | Calm | 31 | 252/0/0/0/252/6 | Double Edge, Confuse Ray, Rest, Psychic |
 Gengar | Leftovers | Modest | 31 | 252/0/252/0/6/0 | Psychic, Hypnosis, Dream Eater, Destiny Bond |
 Breloom | Lum Berry | Jolly | 31 | 6/252/0/252/0/0 | Spore, Focus Punch, Giga Drain, Headbutt |
Completion Checklist
- Clear the main objective: Win three-turn judged battles and prepare for Greta's Guts/status pressure.
- 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.
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. - Frontier Brain streaks and teams come from
src/frontier_util.c; Factory rental behavior comes fromsrc/battle_factory.c; facility mon sets come fromsrc/data/battle_frontier/battle_frontier_mons.h. - Trainer art on this page uses the local Emerald trainer manifest and reused Hoenn character art where Emerald-specific artwork is not available.