Steal a Brainrot
Sigma Girl

Sigma Girl

Legendary
CRAFT MACHINEBRAINROT TRADER
Base Cost
$340.0K
Price Format:
• K = 1,000
• M = 1,000,000
• B = 1,000,000,000
• T = 1,000,000,000,000
Income per Second
$1.8K
Price Format:
• K = 1,000
• M = 1,000,000
• B = 1,000,000,000
• T = 1,000,000,000,000
Efficiency
0.53%
Event
Mexico Event

Sigma Girl is a Legendary-tier character in Steal a Brainrot, depicted as the female counterpart to Sigma Boy, exuding strength and charisma with a feminine twist, embodying the wild essence of Italian brainrot meme culture.

Legendary brainrot generating $1.8K/second

Sigma Girl is crafted through the Craft Machine. Crafting time: 15m. Crafting cost: 340,000.

How to Obtain

CRAFT MACHINEBRAINROT TRADER

Crafted using materials and resources obtained from the game world.

Required Materials:

All Crafts →
Cost: $340,000
Time: 15m
Location: Craft Machine
Purchase

Available by crafting in the Craft Machine using three Bambini Crostini and one Sigma Boy, with a crafting time of 15 minutes and a crafting cost of 340K. Can be obtained by trading in older Brainrots at the Brainrot Trader.

Steal

Steal from heavily defended bases; requires advanced speed boosts, strategic timing, and high-tier defensive items.

Pro Tips

Gather three Bambini Crostini and one Sigma Boy, craft in the Craft Machine with 340K and 15 minutes, then claim; for stealing, employ advanced tactics with top-tier items. Can be obtained by trading in older Brainrots at the Brainrot Trader.

Mutation Income Calculator

Income with Default mutation
6.4M/h
Base: $6.4M/h+0%
View all mutations at hourly rates
MutationMultIncome
Default1x$6.4M
Gold1.25x$8.1M
Diamond1.5x$9.7M
Rainbow10x$64.8M
Bloodrot2x$12.9M
Celestial4x$25.9M
Candy4x$25.9M
Lava6x$38.8M
Galaxy6x$38.8M
YinYang7.5x$48.6M
Radioactive8.5x$55.0M
Cursed9x$58.3M
Divine10x$64.8M

Release Status

Released

None; confirmed as a published Legendary Brainrot character by developers, introduced in September 2025.

Brainrot Income Calculator

Locked to the current brainrot on this page.

Live Result

Updates instantly as you change mutation and traits.

Multiplier1.00x
Per Second$0
Per Hour$0

Expand the full trait list for more combinations.