Almost every system in Sailor Piece sits behind an NPC: rerolling stats, unlocking Haki, buying a sword, starting a dungeon, even reaching the second sea. The game does not mark most of them on the map, and several of them ask for Levels or Gems that the NPC itself does not mention. This guide groups the NPCs by what they do, with the island, the cost and the requirement for each. The entries come from the Sailor Piece Wiki data stored in the site database, and the NPC list has every entry as a page of its own.
NPCs that change your build
These are the ones you return to again and again. Most of them live on Sailor Island, the hub of the First Sea.
| NPC | Island | What it does | Requirement or cost |
|---|---|---|---|
| Stat Master | Sailor Island | Rerolls your 7 stats (Damage, Defense, CDR, Crit Chance, Crit Damage, DMG Reduction, Luck) in tiers F to Z | Not listed |
| Trait Master | Sailor Island | Rerolls your Trait with a Trait Reroll | Mythical pity at 500 rolls, Secret pity at 2,500 |
| Passive Master | Sailor Island | Rerolls your weapon Passives | Mythical pity at 500 rolls |
| Power Master | Lawless Island | Rerolls Powers with Power Shards | Level 11,500 and 5,500 Gems |
| Ascend Master | Sailor Island | Upgrades Ascension up to level 10 | At max: +105% Money, +100% Gems, +12% CDR, +55% Luck |
| Artifacts Master | Snow Island | Unlocks the Artifacts system | Level 2,500, 500,000 Money and 500 Gems |
| Skill Master | Slime Island | Unlocks and manages the Skill Tree | Level 7,000 and 1,000 Gems |
| Enchanter | Shibuya Station / World Island Sea 2 | Upgrades accessories from E1 to E10 | Materials such as Wood, Iron and Obsidian |
| Storage Keeper | Sailor Island | Stores fruits, races, clans and more | Slots unlock with Gems |
Details on how traits and passives roll are in the trait reroll guide and the ascension guide. Pity numbers are the guaranteed counters for the named rarity, as listed in the entries.
Haki and ability trainers
| NPC | Island | What it unlocks | Requirement or cost |
|---|---|---|---|
| Observation Master | Desert Island | Observation Haki | 250,000 Coins and 300 Gems |
| Haki Trainer | Snow Island | Armament Haki, after a 3-part quest | 150 Combat kills, 65 Combat Z uses, 750 Combat punches |
| Conqueror Haki Trainer | Not listed | Conqueror Haki, a 34% damage buff activated with J | Haki level 40, Observation Haki level 25, Ascension 5 |
| The World Master | Not listed | The F ability of The World melee | Defeat The World boss 20 times on Hard or Extreme, use its V move 250 times, defeat 10 world bosses and 10 sea beasts with it |
Conqueror Haki has the highest barrier in this group, because it needs Ascension 5 and two other Haki levels. The Haki page lists the effects.
Fruit dealers
Two NPCs on Sailor Island roll a random Devil Fruit:
- Coin Fruit Dealer: 15,000 Coins per roll.
- Gem Fruit Dealer: 50 Gems per roll.
The best Devil Fruits guide shows which results are worth keeping.
Weapon sellers and quest-line trainers
Many swords and melees are bought or crafted through an NPC. The requirement column matters more than the price, since several sellers will not sell without a title, a clan or a race.
| NPC | Island | Sells or starts | Requirement |
|---|---|---|---|
| Katana Seller | Starter Island | Katana | 2,500 Coins |
| Dark Blade Seller | Snow Island | Dark Blade | 250,000 Money and 150 Gems |
| Gryphon Seller | Shibuya Station | Gryphon | 650,000 Coins and 650 Gems |
| Soul Reaper Seller | Hollow Island | Soul Reaper | Money, Gems and materials |
| Slime Trainer | Slime Island | Slime sword | Money, Gems, materials and the Demon Lord title |
| Demon King Seller | Academy Island | Demon King melee | Voldigoat clan, Demon King title and materials |
| Vampire King Seller | Sailor Island | Vampire King melee | Vampire race, Vampire King title and materials |
| Strongest of Today Seller | Shinjuku Island | Strongest of Today melee | Strongest Sorcerer title and materials |
| Strongest in History Seller | Shinjuku Island | Strongest in History melee | Disgraced One title and materials |
| Cosmic Being Seller | Punch Island | Cosmic Being melee | Cosmic Being title and materials |
| Sun God Seller | Slayer Island | Sun God sword | Sun Dancer title and materials |
| The World Seller | Bizarre Island | The World melee | Primordial bloodline, Time Tyrant title and materials |
| King of Heroes, Blessed Maiden, Moon Slayer Sellers | Boss Island | Their melees | Not listed |
Several quest-line NPCs craft a weapon after a chain of tasks: the Solo Hunter Trainer runs a 5-quest line, the Manipulator Trainer a 5-quest line, the Curse King and Limitless Sorcerer Trainers 3-quest lines each, and the Empyrean Trainer a 6-quest line for the Spirit Warrior melee. The Shadow Master runs the Shadow Monarch quest line: deal 1B damage, defeat 1,250 NPCs, kill 150 bosses and beat the Shadow Dungeon on every difficulty.
Most of the title requirements above come from boss drops, and they are listed in the titles guide. The route to every sword is in how to get every sword.
Merchants, exchangers and game modes
| NPC | Island | What it does |
|---|---|---|
| Merchant | Sailor Island | Rotating shop of 8 items, restocked every 30 minutes, Level 1,000 required: rerolls, keys and shards |
| Boss Exchanger | Boss Island | Trades Boss Tickets for Excalibur (65), Qin Shi (250) or Soul Reaper (500) |
| Dungeon Master | Dungeon Island | Only NPC who summons Dungeon Portals: Level 5,000, 6 Ancient Pieces and 25 boss kills |
| Dungeon Merchant | Dungeon Island | Sells materials and chests for Dungeon Tokens |
| Defense Merchant | Punch Island | Sells keys, rerolls, chests and cosmetics for Crystal Coins from Crystal Defense |
| Infinite Tower Portal | Tower Island | Spawns the portal to the Infinite Tower for up to four players |
For the modes behind these NPCs, see the dungeon unlock guide, the Infinite Tower guide and the Crystal Defense guide.
Progression NPCs
- Quest Giver: numbered 1 to 25, one set on every island, with kill-X quests that reward XP, Coins and Gems.
- Sea Traveler: gives the quest line that unlocks Sea 2. It requires Ascension 5 and level 12,750, then Ancient Fragments and 7 Map Pieces from bosses. The Sea 2 unlock guide walks through it.
- Group Reward: a one-time reward for joining the game's Roblox group, on Starter Island.
What to do first
- 1Collect the cheap trainers early: Observation Master (250,000 Coins, 300 Gems) and the Haki Trainer.
- 2Unlock the Artifacts Master at level 2,500 and the Skill Master at level 7,000, as soon as you can pay the Gems.
- 3Use the Merchant from level 1,000, since its stock refreshes every 30 minutes.
- 4Save Gems for the Power Master (5,500) and the Skill Master (1,000) rather than spending them on fruit rolls.
- 5Plan Sea 2 around Ascension 5, since both the Sea Traveler and the Conqueror Haki Trainer ask for it.
Common mistakes
- Walking to a seller without the required title or clan, then finding the purchase locked.
- Spending Gems on fruit rolls before an NPC that gates progression needs them.
- Forgetting that the Merchant refreshes every 30 minutes and needs level 1,000.
- Expecting the Dungeon Master to work like a normal quest NPC. It needs 6 Ancient Pieces and 25 boss kills.
- Missing Ascension 5, which both the Sea Traveler and the Conqueror Haki Trainer require.
FAQ
Where do I unlock Observation Haki in Sailor Piece?
At the Observation Master on Desert Island, for 250,000 Coins and 300 Gems.
Where do I reroll my stats?
At the Stat Master on Sailor Island. It rerolls 7 stats in tiers from F to Z.
How do I unlock Conqueror Haki?
Talk to the Conqueror Haki Trainer with Haki level 40, Observation Haki level 25 and Ascension 5. It gives a 34% damage buff activated with J.
Who sells the Katana?
The Katana Seller on Starter Island, for 2,500 Coins.
How do I start dungeons?
The Dungeon Master on Dungeon Island is the only NPC who can summon Dungeon Portals. It needs Level 5,000, 6 Ancient Pieces and 25 boss kills.