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Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Chiselbella is a secret mini-boss in Borderlands 4’s Bounty Pack 2: The Legend of the Stone Demon. Find her by traveling to Demonhold Fast Travel Station in Demon’s Domain and following the path north. The named Legendary drops reported by Mobalytics are Bubbles, a Vladof assault rifle, and Mercurious, a Vladof SMG; no verified Chiselbella-specific drop percentage is available.
Where to find Chiselbella
Travel to Demonhold Fast Travel Station in Demon’s Domain. From there, follow the path north toward Chiselbella. Mobalytics’ [secret-boss guide] and its weapon guides give this starting point and direction, but do not provide a reliable room-by-room route or additional landmarks.
What Chiselbella drops
Mobalytics lists two named Legendary weapons as Chiselbella drops. These are reported drops, not a guarantee that either weapon will appear on a given defeat or proof that they are her only possible loot.
| Weapon | Class | Described trait |
|---|---|---|
| Bubbles | Vladof assault rifle | Its bullets are converted into bubbles. |
| Mercurious | Vladof SMG | Its damage scales with movement speed. |
The class and trait descriptions come from Mobalytics’ [Bubbles guide] and [Mercurious guide]. The available information does not establish a head-to-head damage comparison, so choose based on whether the assault rifle’s bubble effect or the SMG’s movement-speed scaling better suits your build.
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Do you need the Bounty Pack?
The Bubbles and Mercurious guides say access to Bounty Pack 2: The Legend of the Stone Demon is required to fight Chiselbella. Those guides do not establish its current price, storefront availability, or which game editions include it.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is there a known drop rate?
No numeric chance for Bubbles or Mercurious is established in the cited guides. Gearbox’s March 5, 2026 update says dedicated loot reward chances were standardized across base-game bosses, Bounty Packs, and Invincible encounters, but publishes no Chiselbella-specific percentage. It also says the change does not affect Phosphene drop rates. Treat both weapons as possible dedicated drops, not guaranteed rewards, and do not rely on an unverified percentage.
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