Steal a Brainrot4th Bros
4th Bros is a Secret paired Independence-style brainrot with a short-window collectible feel. The duo design leans into patriotic colors and sibling-like staging. Its compact paired silhouette makes it the quick-flash collectible of the July set.
Secret brainrot generating $3.7M/second
4th Bros is a Secret early Update 56 brainrot from a short live window and is currently unobtainable.
Identity & Availability
Quick Answers
What is 4th Bros?
4th Bros is a Secret brainrot in Steal a Brainrot through Themed Brainrots. It generates $3.8M/s and has a listed base cost of $800M.
How do you get 4th Bros?
Current availability for 4th Bros: 4th Bros is a Secret early Update 56 brainrot from a short live window and is currently unobtainable.
When was 4th Bros added to Steal a Brainrot?
4th Bros has a recorded game-added date of July 4, 2026.
How to Obtain
Special themed brainrots from event activities.
Check whether Independence-style admin-abuse activity returns before planning a purchase route.
Steal 4th Bros from players who obtained it while it was available.
Treat current copies as a short-window Secret because the live page now marks the route unobtainable.
Visual Structure
Prototype
Structured prototype tags extracted from the brainrot's identity and visual design.
Composition
Source art and name indicate two patriotic characters; canonical component ids are not separately established.
Collection Tip: This character contains 2 entities. Collect 4th Bros to boost your progress!
Mutation Income Calculator
View all mutations at hourly rates
| Mutation | Mult | Income |
|---|---|---|
| Default | 1x | $13.5B |
| Gold | 1.25x | $16.8B |
| Diamond | 1.5x | $20.2B |
| Rainbow | 10x | $135.0B |
| Bloodrot | 2x | $27.0B |
| Celestial | 4x | $54.0B |
| Candy | 4x | $54.0B |
| Lava | 6x | $81.0B |
| Galaxy | 6x | $81.0B |
| YinYang | 7.5x | $101.2B |
| Radioactive | 8.5x | $114.7B |
| Cursed | 9x | $121.5B |
| Divine | 10x | $135.0B |
| Cyber | 11x | $148.5B |
| Phantom | 12x | $162.0B |
Release Status
Released
Released in the early Update 56 live arrivals, but the current route is no longer active.
Brainrot Income Calculator
Locked to the current brainrot on this page.
Live Result
Updates instantly as you change mutation and traits.
Expand the full trait list for more combinations.