Duo Brainrots pack two characters or matching objects into a single collectible, and every one of them sits in the Secret rarity tier. That makes them among the most valuable base units in Steal a Brainrot, with passive income that runs from tens of millions to hundreds of millions per second. The catch is availability. Many duos were tied to seasonal fuses, craft machines, or lucky blocks that have since closed, so only a handful can be picked up right now.
Quick answer: Every Duo Brainrot is Secret rarity. The ones you can still obtain are Ketchuru and Musturu, Garama and Madundung, Burguro and Fryuro, and Rubiko and Kubiko from the Red Carpet, plus Los Amigos (Los Taco Blocks), Los Primos, Coco and Mango (Summer Fuse), and Moby Bros (Los Traders). All others are currently out of stock or locked behind retired machines.
What a Duo Brainrot is
A Duo Brainrot is a Secret-rarity unit that shows two things joined together. Some are food pairings, like ketchup and mustard or burgers and fries. Others are named “bros” or Spanish-styled groups such as Los Amigos and Los Primos. Because they all share the Secret tier, they generate far more passive cash per second than Common through Brainrot God units when placed in your base.
There are 31 Duo Brainrots introduced so far, spread across food themes, holiday events, aquatic sets, and machine-only crafts. The way you get one depends entirely on which system it belongs to. Red Carpet duos spawn and can be bought directly, while machine and event duos required a specific fuse, craft, or block that may no longer be active.
Duo Brainrots you can still get
Only eight duos are currently unlockable. Four of them appear on the Red Carpet, which means you can purchase them outright when they show up. The rest come from active blocks, fuses, or traders.
| Duo Brainrot | Cost | Income | How to get |
|---|---|---|---|
| Ketchuru and Musturu | $7.5B | $42.5M/s | Red Carpet |
| Garama and Madundung | $5B | $50M/s | Red Carpet |
| Burguro and Fryuro | $75B | $150M/s | Red Carpet |
| Rubiko and Kubiko | $21B | $72.5M/s | Red Carpet |
| Moby Bros | $225B | $225M/s | Los Traders |
| Los Amigos | $55B | $130M/s | Los Taco Blocks |
| Coco and Mango | $4.5B | $33.5M/s | Summer Fuse |
| Los Primos | $3.7B | $31M/s | Available in-game |
Moby Bros gives the highest passive income of any duo at $225 million per second, but its $225B price tag makes it a late-game target. If you want the cheapest working entry, Los Primos costs $3.7B and pays $31M/s.
Every Duo Brainrot, cost, and income
Here is the complete roster with each unit’s price, passive income, and current status. Anything marked out of stock or tied to a retired machine cannot be obtained through normal play right now.
| Duo Brainrot | Cost | Income | Status / source |
|---|---|---|---|
| Moby Bros | $225B | $225M/s | Yes (Los Traders) |
| Popcuru and Fizzuru | $135B | $170M/s | No (2026 Fuse Machine) |
| Bunny and Eggy | $135B | $170M/s | No |
| Rosey and Teddy | $130B | $165M/s | No (Heart Lucky Block) |
| Cooki and Milki | $100B | $155M/s | No (Santa’s Fuse) |
| Burguro and Fryuro | $75B | $150M/s | Yes (Red Carpet) |
| Ketupat Bros | $65B | $145M/s | No (Fuse Machine) |
| Fortunu and Cashuru | $55B | $130M/s | No (Leprechaun Lucky Block) |
| Los Amigos | $55B | $130M/s | Yes (Los Taco Blocks) |
| Pancake and Syrup | $50B | $125M/s | No (Out of stock) |
| Kalika Bros | $47.5B | $115M/s | No (Cyber Craft Machine) |
| Fragrama and Chocrama | $40B | $100M/s | No (Brainrot Trader + Dealer) |
| Duggy Bros | $30B | $90M/s | No (Cyber Craft Machine) |
| Spooky and Pumpky | $25B | $80M/s | No (Witch Fuse Exclusive) |
| Rubiko and Kubiko | $21B | $72.5M/s | Yes (Red Carpet) |
| Money Money Bros | $9B | $47M/s | No (Cyber Craft Machine) |
| Ketchuru and Musturu | $7.5B | $42.5M/s | Yes (Red Carpet) |
| Gym Bros | $7.5B | $42.5M/s | No (Cyber Craft Machine) |
| Swaggy Bros | $7B | $40M/s | No (Out of stock) |
| Garama and Madundung | $5B | $50M/s | Yes (Red Carpet) |
| Coco and Mango | $4.5B | $33.5M/s | Yes (Summer Fuse) |
| Bacuru and Egguru | $3.8B | $24M/s | No (2026 Fuse Machine) |
| Los Primos | $3.7B | $31M/s | Yes |
| Los Cupids | $3B | $30M/s | No |
| W or L | $3B | $30M/s | No (Out of stock) |
| Los Candies | $3B | $23M/s | No (Santa’s Fuse) |
| Los Mobilis | $2.7B | $22M/s | No (Witch Fuse) |
| Chipso and Queso | $2.5B | $25M/s | No (Out of stock) |
| Las Sis | $2.5B | $17.5M/s | No (Craft Machine) |
| Los Bros | $2.4B | $24M/s | No (Craft Machine) |
| Cuadramat and Pakramatmamat | $400M | $1.4M/s | No (Brainrot Trader) |
How each source works
The status column above maps to a handful of delivery systems. Knowing which one applies tells you whether a duo is a simple purchase or gone for now.
- Red Carpet: The unit spawns and can be bought directly when it appears. Ketchuru and Musturu, Garama and Madundung, Burguro and Fryuro, and Rubiko and Kubiko all come this way.
- Los Traders and Los Taco Blocks: Trader-based and Taco event rewards, source of Moby Bros and Los Amigos respectively.
- Fuse Machines: Seasonal fuses such as the Summer Fuse, Witch Fuse, Santa’s Fuse, and the 2026 Fuse Machine created many duos. Only the Summer Fuse’s Coco and Mango is currently active.
- Craft and Cyber Craft Machines: These produced Los Bros, Las Sis, Gym Bros, Money Money Bros, Duggy Bros, and Kalika Bros, all now closed.
- Lucky Blocks: Holiday blocks like the Heart Lucky Block and Leprechaun Lucky Block dropped Rosey and Teddy and Fortunu and Cashuru during their events.
Why most duos are locked
The out-of-stock and retired-machine tags are the reason a completed duo collection is so hard. Event fuses and craft machines rotate out when their season ends, and limited-quantity spawns like W or L and Chipso and Queso simply run dry. Once a source closes, the only way to add that duo is to steal it from another player who still owns one, or wait for a possible return of that machine or event.
No official return window for the retired duos is currently confirmed. For now, focus your money on the eight obtainable units. Los Primos and Coco and Mango are the most affordable entries, while Moby Bros and Burguro and Fryuro deliver the strongest income if you can bank the billions to buy them.
