ExtremeThird Sea
Shadow Monarch
The ultimate dungeon boss and the final challenge of the Rune Dungeon. Shadow Monarch drops rare top-tier runes and is one of the hardest PvE encounters in Sailor Piece.
Shadow Monarch
Third Sea
- Location
- Dungeon Island — Rune Dungeon (Final Floor)
- Level Required
- 5,000
- Respawn Time
- Dungeon only
- HP
- 0
Boss Stats
| Stat | Value | Notes |
|---|---|---|
| Health | 0 | - |
| Level | 5,000 | - |
| Sea | Third Sea | - |
| Difficulty | Extreme | - |
| Respawn Time | Dungeon only | - |
| Drop Count | 3 items | - |
Drop Table
| Item | Type | Drop Rate |
|---|---|---|
| Havoc Rune | Rune | 5% |
| Wraith Rune | Rune | 5% |
| Rare Rune (random) | Rune | 15% |
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Combat Tips
- ‣Use Armament Haki to deal full damage
- ‣Bring a fruit build for maximum damage output
- ‣Team up for this boss — solo is extremely difficult
- ‣Respawns every Dungeon only
Location
Dungeon Island — Rune Dungeon (Final Floor)
Third Sea
Last updated: 2026-03-14