Bosses
In Universal Piece each Island has major bosses that drop very rare Items and Materials that can be used for crafting or quests.
Some Islands have only 1 main boss while other have multiple bosses. Also, some of the bosses will automatically spawn on cooldown, while for some you will need specific items to spawn them.
Table of Contents
All Bosses
Bosses that spawn on a cooldown:
- Warrior Soul
- King Burger
- Master Bones
- Gassy
- Blizzard Queen
- Turbo Mama
- Dual Sword Master
- Master of Light
- System Breaker
Summonable Major Bosses
| Boss | Location | In Game |
|---|---|---|
| Warrior Soul | Novice Island | ![]() |
| King Burger | Burger Island | ![]() |
| Master Bones | Zombie Island | ![]() |
| Gassy | Cold Island | ![]() |
| Blizzard Queen | Cold Island | ![]() |
| Shunra | Cold Island ( Fire part ) | ![]() |
| Turbo Mama | Alien Island | ![]() |
| Mahoraka | Shibuya Island | ![]() |
| Heian Sukuna | Shibuya Island | ![]() |
| Dual Sword Master | Solo Island | ![]() |
| Light Master | Solo Island | ![]() |
| System Breaker | Solo Island | ![]() |
| Red Knight | Solo Island | ![]() |
| Curse King | Bone Island | ![]() |
How to Get Boss Drops
When fighting a boss, below the left side of their HP bar, you will see a damage-dealt chart. To have chance at any boss rewards, you will need to be in the top 3 damage dealers in that fight.

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