
Sailor Piece · Boss
King Of Heroes
Spawnable boss on Boss Island with 300M base HP. Summoned via the Boss Island summoner.
Drop table
Summon cost
King Of Heroes — In-Depth Analysis
The King Of Heroes cuts a strikingly different profile from the other Boss Island summons — at 300 million HP he is the most accessible of the island's summonable roster, making him the go-to entry point for players who are transitioning into organized boss farming in the First Sea. The lower HP pool doesn't mean he's trivial, but it does mean faster clears and shorter wait times between summons, which compounds into better overall efficiency per session.
His drop table balances guaranteed utility items with a handful of genuinely desirable rares. Race Reroll and Boss Ticket lock in at 100%, and Trait Reroll follows at 80% — the same guaranteed floor as Ice Queen but achieved in a fraction of the time. A 30% chance at a Dungeon Key adds dungeon access to the reward loop. Further down, Throne Remnant at 11.5% and Ancient Shard at 4.5% are the primary material pulls, while Golden Essence (1.5%), the Sun Armor accessory (1.15%), the Golden King Title (1%), and Phantasm Core (0.5%) round out the rare column.
Because his fights are shorter, the King Of Heroes is particularly well-suited for players grinding rerolls: the per-hour count of Race and Trait Rerolls will likely exceed what you'd earn fighting harder bosses if you factor in kill speed. Bring enough damage to burst him down quickly and the efficiency is hard to beat at this tier.
Related Guides
Frequently asked questions
Where do you find King Of Heroes in Sailor Piece?
King Of Heroes is located at Boss Island in Sea 1.
How much HP does King Of Heroes have?
King Of Heroes has 300M HP.
What does King Of Heroes drop?
King Of Heroes can drop: Race Reroll, Boss Ticket, Trait Reroll, Dungeon Key, Throne Remnant and more.