Los Primos
Secret tier brainrot in Steal a Brainrot
About Los Primos
Los Primos is a secret-tier brainrot in Steal a Brainrot, the Roblox collection-and-trading game where every pet generates passive income and can be upgraded with mutations and traits. At base, Los Primos earns $31.0M/s and costs $3.8B from the in-game shop — those numbers are the floor, before any multiplier from mutations or trait stacking is applied.
This brainrot was first added in Update 25. It is obtained via Obtaining it from the Craft Machine when it was available in-game. Verify availability before any trade — Steal a Brainrot regularly cycles which items are obtainable, and a brainrot's market value can swing sharply when the game flips it to limited or unobtainable status.
Across live Eldorado marketplace listings, Los Primos prices currently range from $0.8 for the Default variant up to $999.99 for Divine — a 1250.0x spread reflecting the multiplier gap between mutation tiers. Mutation multipliers compound on the base income, so the same Los Primos body at a higher-tier mutation out-earns its Default variant by exactly that ratio per second.
Current market signals: demand is terrible, price trend is falling. Los Primos's market is soft right now: low buyer activity and a falling median price. Sellers are likely to keep dropping list price to find takers; buyers can usually negotiate below the listed value.
For trade evaluation, divide the USD value by your offer's value to get a clean ratio. The trade calculator does this automatically and applies trait amplifiers (Brilliant, Sniper, etc.) which add to base income additively rather than multiplicatively. See the methodology page for how the valuation algorithm actually computes these numbers, or the trade-valuation guide for a step-by-step walkthrough.
Background & lore
Source: Steal a Brainrot Wiki ↗75B.
Los Primos consists a happy Tralalerito and a happy Orcalito standing next to each other, being cousins. Both are the happy variants of respective brainrots.
Los Primos consists of a happy Tralalerito from Los Tralaleritos and a happy Orcalito from Los Orcalitos. The Los Tralaleritos has black eyes shaded with a faint colour of blue and brown, with the Los Tralaleritos wearing blue sneakers. Instead, the Los Orcalitos has black eyes with a shade of blue, with the Los Orcalitos wearing white sneakers. Both are the happy variants of respective brainrots.
Trivia
- Los Primos is the best Brainrot craftable in the Craft Machine pre-28/02/2026 buff. (And will stay that way as the Craft Machine is gone)
- Los Primos is the Spanish/Portuguese for "The Cousin". It's also referring to their status as the primary (El Primo) animals in sea food chain, since Tralalerito and Orcalito are based on shark and orca, the apex predator of the sea.
- Los Primos's profit is not that good, because it requires Los Bros (24m/s) , 67 (7.5m/s), Los Orcalitos (235k/s) and Los Tralaleritos (500k/s) being a final profit of 34.5m/s. But, for index and space, sometimes it can be worth it to craft, as well as demand since players are more likely to want 1 high-tier brainrot rather then to hold 4 lower-tier brainrots.
- Los Primos was the last Brainrot Sammy added to the Craft Machine before it was removed.
- Los Primos requires a 67 to craft, possibly referring to cousins usually being portrayed as the "brainrotted ones"
Background content sourced from the community-maintained Steal a Brainrot Wiki under CC BY-SA 3.0. rot.rocks is not affiliated with the wiki or with Roblox.
Mutation values
| Mutation | Multiplier | USD Value |
|---|---|---|
 Default | 1× | $0.8 |
 Gold | 1.25× | $0.88 |
 Diamond | 1.5× | $0.96 |
 Bloodrot | 2× | $10 |
 Candy | 4× | $3 |
 Lava | 6× | $5 |
 Galaxy | 7× | $3.25 |
 Yin Yang | 7.5× | $5 |
 Radioactive | 8.5× | $39 |
 Cursed | 9× | $500 |
 Rainbow | 10× | $3.85 |
 Divine | 10× | $999.99 |
Values are derived from current Eldorado marketplace listings. When a specific mutation has no live listings, the value is interpolated from surrounding multiplier tiers — see the methodology page.
Trade Los Primos
Want to trade this brainrot? Post an offer on the rot.rocks trading marketplace, or run the numbers through the trade calculator before you commit to a deal.