Hero Siege DatabaseHero Siege Karp King drops
Karp King can yield Stormloop, Karp King's Bellybutton and Karp King's Soulgem. Defeat Karp King in Temple of Fishes in Act 5, using Inferno for rewards explicitly marked Inferno.
4 obtainable items
Heroic · 1
Common · 3
Location & boss type
Karp King is the Act 5 boss in Temple of Fishes, reached from Temple of Zamjo (5-5). It is an Act Boss encounter rather than an item-summoned Uber or a separate key-dungeon boss.
Materials & their uses
Karp King's Bellybutton is the Act 5 ingredient for Key of Terror. Combine one each of the six Act-boss materials to make that key for Uber Damien. This boss material is distinct from Karp King’s Soulgem and does not substitute for a gem.
Compare farming routes
The Boss Dungeons page describes an increased-chance area pool, not just Karp King’s own kill rewards. Key of Terror summons Uber Damien, while Signet of Existence uses different Act fragments for Architect of Ruin. These recipes do not change the difficulty labels on Karp King’s listed loot.
Difficulty & item conditions
Stormloop, Karp King's Infernal Bellybutton and Karp King's Soulgem have an Inferno condition. The item’s required character level is an equipment requirement, not a minimum area level.
Related sources
1999 items · Season 10 / 7.0 · Updated Oct 8, 2026 · Version & sources
Attributes & drop filters
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4 items
Attributes & acquisition
- +3–5 to Lightning Skills
- Lightning Skill Damage increased by 25–40%
- -15–25% to Enemy Lightning Resistance
- Stasis Damage increased by 10–20%
Level required: 100
Item roll ranges only. Character bonuses and upgrades are not included.
Attributes & acquisition
- Lightning Skill Damage increased by 5%
- +10% to Lightning Resistance
- -5% to Enemy Lightning Resistance
Level required: 90
Item roll ranges only. Character bonuses and upgrades are not included.
- Karp King
Defeat Karp King · Inferno only.