Jack O'Lantern Pet

The Jack O'Lantern Pet trait slaps a x4.5 income multiplier onto whichever brainrot it lands on, nearly tripling that character's base cash-per-second output. That puts it solidly in the mid-to-upper tier of traits — well above the forgettable x1.5–x2 minor boosts and miles ahead of the punishing x0.5 Sleepy, which actually cuts income. It won't dethrone the legendary x9 Strawberry, but a x4.5 is the kind of number that meaningfully changes a brainrot's value in both grinding and trading.

Getting it is entirely at the mercy of Halloween's event rotation. During the seasonal event, a rollercoaster circles the map on an hourly cycle, and any brainrot caught wandering the map when it passes can randomly receive the Jack O'Lantern Pet trait. Seasonal traits like this one are tied to limited holiday windows, so once the Halloween event ends you simply cannot obtain it until Roblox Steal a Brainrot runs the seasonal event again — making existing copies genuinely scarce.

Because traits are permanent, the Jack O'Lantern Pet multiplier stays on that brainrot forever and stacks on top of any Mutation it already carries. A brainrot wearing both a strong mutation and this trait becomes a high-value target, so park it somewhere defensible on your base and keep a close eye on raiders who know exactly what they're looking for.