Brunito Marsito
Secret tier brainrot in Steal a Brainrot
About Brunito Marsito
Brunito Marsito 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, Brunito Marsito earns $3.5M/s and costs $750.0M from the in-game shop — those numbers are the floor, before any multiplier from mutations or trait stacking is applied.
Across live Eldorado marketplace listings, Brunito Marsito prices currently range from $0.99 for the Default variant up to $7.3 for Rainbow — a 7.4x spread reflecting the multiplier gap between mutation tiers. Mutation multipliers compound on the base income, so the same Brunito Marsito body at a higher-tier mutation out-earns its Default variant by exactly that ratio per second.
Current market signals: demand is amazing, price trend is rising. Brunito Marsito is in an active flipping window: buyers are bidding it up faster than the market median, and listings are clearing at the new prices. Expect to pay a premium if you're acquiring; you can usually trade slightly above listed value if you're offering one.
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 ↗said that he would only ever spawn this Brainrot once (during Bruno Mars' in-game concert as part of the 01/17/26 Admin Abuse).
Marsito's appearance is based off of the attire that Bruno wore in the music video for his 2026 song, "I Just Might". It is depicted as a humanoid person, with a brownish-like skin tone, along with a beard, a red band covering his hair, and two eyes with brown pupils. They can be seen wearing a green jacket, along with yellow ornaments, and green pants paired up with brown boots.
Trivia
- The addition of Brunito Marsito marks the first official celebrity collaboration in Steal a Brainrot's history.
- It is also the 3rd Brainrot to be based off of a real life person, after Sammyni Spyderini and Raccooni Jandelini.
- Brunito Marsito is the 2nd humanoid Brainrot to not include any of the typical Brainrot characteristics.
- It is the first Brainrot based of a singer, second one being Mi Gatito.
- Like Raccooni Jandelini, this Brainrot was only spawned once during Admin Abuse.
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× | $0.99 |
 Gold | 1.25× | $1.09 |
 Diamond | 1.5× | $1.19 |
 Rainbow | 10× | $7.3 |
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 Brunito Marsito
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.