660 px

—Image © Kixeye
In-game Sprite
File:Brain Animation.png
Monster Locker Level3
Favorite TargetHarvesters, Town Hall and Silos
DescriptionCunning and greedy, Brain's pulsating cerebral cortex and high intelligence make him perfect for looting resources.
Special AbilityInvisibility
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Monster Information Edit

"Unlocking me was the smartest thing you've done all week. Not to brag, but I graduated valedictorian from Backyard State and double majored in Looting Resources and Mechanical Engineering. Send me into battle and I'll use my superior intelligence to make sure you come out on top. Gather some goo and fire up the Hatchery!"

Brain is known to be a looting monster as it loots 20% more resources than any other monster. Brain won't destroy resource gatherers unless there isn't any other building left to attack; instead it will just loot all resources inside, So don't be suprised if your brains stop attacking Harvesters when they are almost done. However, this doesn't apply to Silos and Town Hall. Also, Brains are very good companions with 20 Fangs and 20 Project X(as defensive towers will target them ,while Brains do your bidding and, it's really useful to have Catapult Lv3+ for putty rage).

Special Ability Edit

File:Brain Lab.png
File:Brain Invisible Animation.png
Brain has a special invisibility power that can be researched inside the 'Monster Lab' building.

Invisibility Edit

Allows Brain to turn invisible, making towers and other monsters (champions and bunker monsters) unable to attack it. This is only activated while Brain is moving, and it will become vulnerable again once it starts attacking any building.

While having invisibility at level 1, Brain will be able to attack once before becoming visible again. At level 2 and 3, it will stay invisible for 4s and 8s more from the moment it stopped moving. Making Brain one of the true ninjas of Backyard Monsters.

Level 1 Level 2 Level 3
Cloak Delay Putty-icon Putty Time Cloak Delay Putty-icon Putty Time Cloak Delay Putty-icon Putty Time
0s Putty-icon 3,000,000 2d 4s Putty-icon 4,500,000 2d 8s Putty-icon 6,000,000 2d

Upgrade Progression Edit

Level 1 Level 2 Level 3 Level 4 Level 5 Level 6
Movement Speed 2kph 2kph 2kph 2kph 2.1kph 2.2kph
Health 600 700 750 800 1,100 1,400
Damage 100 100 200 250 300 350
Goo Cost Goo-icon 12,000 Goo-icon 20,250 Goo-icon 30,375 Goo-icon 35,000 Goo-icon 50,000 Goo-icon 75,000
Housing Space 30 spaces 30 spaces 30 spaces 30 spaces 30 spaces 30 spaces
Production Time 5m 42s 5m 42s 5m 42s 5m 42s 5m 42s 5m 42s
Upgrade Cost Putty-icon1,024,000 Putty-icon1,024,000 Putty-icon2,056,000 Putty-icon2,870,000 Putty-icon4,500,000 Putty-icon6,000,000
Upgrade Time 2d 4h 12h 16h 20h 1d 16h 2d 12h