The Halloween update in Steal a Brainrot has introduced one of the most exciting new features yet, the Witch Fuse.
This spooky cauldron lets players combine multiple Brainrots to unlock powerful and limited-time fusion units with unique traits and mutations.
If you’ve seen the Witch NPC or heard about “fusing Brainrots,” here’s everything you need to know, how the Witch Fuse works, how to use it, and a full list of all Brainrots you can get from it.
How to Use the Witch Fuse in Steal a Brainrot
The Witch Fuse works similarly to the classic Fuse Machine, but with a twist.
Instead of specific combos, you can mix any four Brainrots and the cauldron will generate new fusion results with certain probabilities.
Follow these steps to use the Witch Fuse:
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Pick up a Brainrot from your base by holding E.
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Walk to the Witch Fuse NPC and stand on the Collect Zone to deposit it.
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Repeat this until you’ve submitted four Brainrots.
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Open the Witch Fuse interface and click Fuse to start the process.
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Wait for the fusion timer to complete, it can take from a few minutes to over an hour, depending on the rarity.
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Once it’s ready, your newly fused Brainrot will appear in your base.
Note: The Witch Fuse passes mutations and traits from your original Brainrots into the final one.
For example, Candy mutation (15%) and Sombrero trait (5%) can transfer to your fused result if luck is on your side.
More detailed guide: How to Use Witch Fuse in Steal a Brainrot (Halloween Update Guide)
Witching Hour Event: Limited-Time Halloween Brainrots
Alongside the Witch Fuse, the update also brought the Witching Hour, a recurring event that happens every two hours.
During this event, Halloween-themed Brainrots spawn on the conveyor belt, and collecting all four unlocks the limited La Spooky Grande Brainrot.
Required Brainrots to Get La Spooky Grande:
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Vampira Cappucina
Once you have all four, talk to the Witching Hour NPC, press E, and click Spawn to claim La Spooky Grande.
Only 750,000 units of this limited Brainrot exist, so act fast before the stock runs out.
All Witch Fuse Brainrots in Steal a Brainrot
Here’s the full list of Witch Fuse-exclusive Brainrots, including their rarity, cost, and income per second.
| Witch Fuse Brainrot | Brainrot Rarity | Cost | Income |
|---|---|---|---|
| Eviledon | Secret | $8B | $30M/s |
| Jacko Jack Jack | Brainrot God | $30M | $150K/s |
| Los Mobilis | Secret | $2.7B | $22M/s |
| Vulturino Scheletono | Secret | $110M | $500K/s |
| Snailenzo | Brainrot God | $45M | $250K/s |
| Tentacolo Tecnico | Brainrot God | TBA | TBA |
| Spooky and Pumpky | TBA | TBA | TBA |
| Mummio Rappitto | Epic | TBA | TBA |
| Mamma Rappin | TBA | TBA | TBA |
| Magi Ribbitini | Mythic | TBA | TBA |
| Jacko Spaventosa | Mythic | TBA | TBA |
| Buho de Fuego | Legendary | $345K | $2.3K/s |
| Tartaragno | TBA | TBA | TBA |
| Pinealotto Fruttarino | TBA | TBA | TBA |
How Long Does the Witch Fuse Take?
The fusion time depends on the rarity and combination of Brainrots you use.
For example:
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Fusing with La Cucaracha can take 1 hour 30 minutes, with possible results including Vulturino Scheletono (92%) or Los Mobilis (8%).
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Higher rarity Brainrots typically take longer to fuse and have smaller success odds for Secret results.
What Makes Witch Fuse Brainrots Special?
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Limited-Time Availability: Most Witch Fuse units are seasonal and might not return after Halloween.
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Mutations and Traits: Each fusion can inherit Candy, Sombrero, or other traits, making every Brainrot slightly unique.
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High-Income Units: Brainrots like Eviledon and Los Mobilis generate millions per second, making them some of the best earners in the game.
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Secret Discoveries: Players are still uncovering hidden fusion recipes — so experimenting in the Witch Fuse can reward you with rare surprises.
Related Guides:
- How to Get La Spooky Grande in Steal a Brainrot (Halloween 2025 Guide)
- How to Get La Vacca Jacko Linterino in Steal a Brainrot
- How to Get Zombie Tralala in Steal a Brainrot
- How to Get Frankentteo in Steal a Brainrot
Final Thoughts
The Witch Fuse has added a creative new way to build your collection in Steal a Brainrot.
With a mix of mystery, grinding, and luck, it’s one of the most rewarding mechanics in the game.
If you haven’t tried it yet, start experimenting, your next fusion might unlock a legendary or secret Brainrot no one else has.
Keep an eye out for the Witching Hour too, and don’t miss your chance to craft La Spooky Grande before it disappears for good.
As a seasoned DIY tinkerer, Arvind found the simplest way to help anyone troubleshoot or set up tech without feeling overwhelmed by it. He’s an advocate for smart home technology and in his free time makes music. He’s also an avid gamer, mostly obsessed with single-player titles.
