Thief Boss
Overview
Thief Boss is the second quest in Sailor Piece. Still on Start Island, you'll face your first boss fight.
| Detail | Info |
|---|---|
| Quest Number | 2 |
| Location | Start Island |
| Level Required | 100-249 |
| Task | Defeat 1 Thief Boss |
| Enemy Level | Level 25 |
| Estimated Time | ~5 minutes |
Step 1: Find the Guide NPC
Head to the beach area of Start Island. The Guide NPC for this quest is located near the shoreline. Talk to him to start Quest 2 — Thief Boss.

Step 2: Locate the Thief Boss
The Thief Boss spawns near the Guide on the beach. It's a Level 25 enemy — tougher than the regular thieves from Quest 1, but still manageable if you've been leveling up.
Step 3: Defeat the Thief Boss
You only need to defeat 1 Thief Boss to complete this quest. By this point you should have some stat points to spend — make sure you've allocated them before the fight.
Tips:
- Make sure you've allocated your stat points — even a few points in Sword or Melee makes a big difference
- The boss hits harder than regular thieves, so keep an eye on your HP
- Use your full M1 combo and any abilities you've unlocked
- If you're struggling, grind a few more levels on regular thieves first
Step 4: Quest Complete!
Once the Thief Boss is defeated, the quest completion banner appears and your reward is granted automatically.
Check our value list for item values and use the trade calculator before making any trades!