Phase 3 section
Pokemon Diamond and Pearl Eterna Galactic Building and Commander Jupiter Walkthrough
Cobble Badge Cut through Team Galactic's first headquarters, identify the correct stair routes, rescue the Bicycle Shop owner, and defeat Jupiter. Exact Diamond/Pearl encounters, every sourced trainer, visible and hidden items, puzzle notes, boss teams, and completion checks.
Phase 3 Cobble Badge Galactic Eterna Building, Cycling Road, Hearthome, Solaceon, Veilstone City, and Maylene. 03 / 11 
Cut through Team Galactic's first headquarters, identify the correct stair routes, rescue the Bicycle Shop owner, and defeat Jupiter. This standalone section joins the route plan to the original Diamond/Pearl map, encounter, trainer, item, and script data; Platinum tables are not substituted.
Source maps
Eterna Galactic Building 1F, Eterna Galactic Building 2F, Eterna Galactic Building 3F, and Eterna Galactic Building 4F.
Version discipline
Rows merge only when Diamond and Pearl are identical, and each row carries D/P game markers. Version-exclusive species, mascot encounters, swarms, Radar slots, and GBA insertion slots keep their own labeled rows.
Route Plan
Use Cut at the building entrance; clear both stair choices on each floor for trainers and items; read the sign clues; heal before 4F; defeat Jupiter; speak to the rescued owner; leave for the Bicycle Shop.
- Jupiter's Skuntank has no exploitable Psychic weakness because of its Dark typing; Ground moves, Intimidate, and steady neutral damage are safer.
- The source contains decoy stair branches with optional Grunts and items, so a complete route should intentionally clear both paths.
Exact pret map constants (4)
MAP_ETERNA_GALACTIC_BUILDING_1F MAP_ETERNA_GALACTIC_BUILDING_2F MAP_ETERNA_GALACTIC_BUILDING_3F MAP_ETERNA_GALACTIC_BUILDING_4F
Wild Pokémon
No random wild encounter archive or curated static/gift row applies to this section. This is expected for some buildings, story rooms, and Gym interiors.
Trainers
Field order follows the map's object-event order. Full teams include explicit held items and moves when trdata defines them; cash rewards use the in-engine final-party-slot level and trainer-class multiplier formula.
| Trainer | Route order / placement | Full team | Reward | Access requirement | Optional / rematch note |
|---|---|---|---|---|---|
 Galactic GruntGalactic • source ID 410 | Eterna Galactic Building 1F • field order 1 at (18, 5) | ₽520 | Forest Badge and Cut are required to enter the Galactic building. | Field order 1, tile (18, 5); sightline/path determines whether it can be avoided. No higher-level same-trainer rematch variant is defined in trdata. | |
 Galactic Female GruntGalactic Female • source ID 421 | Eterna Galactic Building 1F • field order 2 at (14, 5) | ₽560 | Forest Badge and Cut are required to enter the Galactic building. | Field order 2, tile (14, 5); sightline/path determines whether it can be avoided. No higher-level same-trainer rematch variant is defined in trdata. | |
| Galactic Female GruntGalactic Female • source ID 422 | Eterna Galactic Building 2F • field order 1 at (12, 8) |
| ₽600 | Forest Badge and Cut are required to enter the Galactic building. | Field order 1, tile (12, 8); sightline/path determines whether it can be avoided. No higher-level same-trainer rematch variant is defined in trdata. |
| Galactic GruntGalactic • source ID 412 | Eterna Galactic Building 2F • field order 2 at (4, 11) | ₽520 | Forest Badge and Cut are required to enter the Galactic building. | Field order 2, tile (4, 11); sightline/path determines whether it can be avoided. No higher-level same-trainer rematch variant is defined in trdata. | |
| Galactic Female GruntGalactic Female • source ID 423 | Eterna Galactic Building 3F • field order 1 at (10, 8) | ₽480 | Forest Badge and Cut are required to enter the Galactic building. | Field order 1, tile (10, 8); sightline/path determines whether it can be avoided. No higher-level same-trainer rematch variant is defined in trdata. | |
 Scientist TravonScientist • source ID 831 | Eterna Galactic Building 3F • field order 2 at (18, 5) |
| ₽720 | Forest Badge and Cut are required to enter the Galactic building. | Field order 2, tile (18, 5); sightline/path determines whether it can be avoided. No higher-level same-trainer rematch variant is defined in trdata. |
 Commander JupiterCommander Jupiter • source ID 406 | Eterna Galactic Building 4F • scripted | ₽1,600 | Forest Badge and Cut are required to enter the Galactic building. | Major or story battle; not a VS Seeker rematch row. |
Items
No visible item ball, decoded scripted gift, or curated system reward is assigned to this section.
Hidden Items
No type-2 hidden-item event is present in the source maps assigned to this section.
Puzzles, Warps, And Switches
- Signs beside the stair pairs hint at the productive route. Take the wrong stairs first for optional battles and loot, return, then use the hinted stairs to continue upward.
Boss Strategy And Partners
Commander JupiterCommander Jupiter • source ID 406Full team
ZubatGiga Drain / Wing Attack / Bite
Skuntankholds Sitrus Berry • Night Slash / Poison Gas / Screech / Smokescreen
Danger notes
Skuntank's Night Slash and limited weaknesses make it much more dangerous than the opening Zubat.
Practical counters
Ground is the direct weakness. Otherwise use a bulky neutral attacker and avoid Psychic moves into its Dark typing.
Completion Checklist
- Complete the currently reachable part of this route plan: Use Cut at the building entrance; clear both stair choices on each floor for trainers and items; read the sign clues; heal before 4F; defeat Jupiter; speak to the rescued owner; leave for the Bicycle Shop.
- Review all 0 encounter rows across the per-area tables, including game markers, method band, time-of-day rates, levels, and each conditional requirement; mark conditional rows for their stated revisit.
- Defeat or deliberately skip every currently reachable trainer row; leave HM-, story-, or National-Dex-gated rows checked only after their access requirement is met.
- Collect currently reachable visible/scripted items and berry trees, use the Dowsing Machine for reachable hidden rows, and retain every explicitly gated row for the named cleanup visit.
- Resolve every currently available puzzle note, boss branch, and partner scene before opening the next section.
Sources And Validation
pret/pokediamondat commit038cccaed5de8f013875bc5d734f912d1de08e0f:map_header.c, D/P encounter archives,trdata.json, zone events, script archives, item tables, and trainer graphics.- Encounter slots were decoded from exact 424-byte D/P members and cross-checked against Gen IV slot behavior; the 0x6C pair is day, morning uses base slots, and 0x74 is night.
- Coordinates remain visible as QA anchors, while each hidden row also provides a plain-English map-region instruction.
- Generation-wide systems that are not tied to a normal map archive—Honey Trees, Great Marsh daily rolls, Trophy Garden, fossils, Pal Park, and event items—are explicitly curated in their dedicated system pages.
Dex quick links