The Vault - Fallout Wiki

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The Vault - Fallout Wiki
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For other Robobrains that appear throughout the Fallout series, see Robobrain.
Fo4AM Robobrain.pngDLC01EncMechRoboBrain01a.png
BehaviorAttacks on sight
Aggression: Very aggressive: Will attack enemies and neutrals on sight.Icon required.pngIcon required.pngIcon optional.png
Assistance: Helps allies: Will help allies.Icon required.pngIcon optional.png
Confidence: Foolhardy: Will never flee or avoid anyone.Icon required.pngIcon required.pngIcon required.pngIcon required.png
Editor IDDLC01EncMechRoboBrain01a
Form ID1041

Robobrains are a type of cyborg that have recently appeared in the Commonwealth, and were introduced to Fallout 4 with the Automatron DLC. Although not present a creature, Robobrains carrying the brains of pre-War celebrities appear in Far Harbor, inhabiting Vault 118.


Main article: Robobrain

Developed by General Atomics International with the assistance of RobCo Industries,[1] the Robobrain was designed from the ground up as a multirole platform for use by military and civilian clients. They are more flexible and powerful than robots due to the fact that their central control and processing unit is an actual brain, rather than an artificial facsimile.[2][3] Coupled with a robust, all-terrain tracked chassis and powerful armaments, the Robobrain was on the forefront of a new revolution in combat robotics.


Robobrains are primarily ranged combatants, and have the highest accuracy of all robot types. However, they perform well in melee combat if properly equipped. In addition, Robobrain heads come with an integrated Mesmetron ranged weapon. This weapon causes some damage, but also disorients and can sometimes stun targets. One weakness is that the treads only allow for one armor segment, giving it less armor than other robot types.

While functioning Robobrain heads are nearly impossible to come by in the Commonwealth, there are reports of raiders combining more typical robot heads with the more durable Robobrain torso sections scavenged from any inoperable Robobrains they find. A report just crossed this desk yesterday sighting a group of homicidal robots, including a Robobrain with the legs from a Sentry Bot. Surely this terror-stricken individual has just been exposed to too much radiation. Who would program robots to wipe out entire towns? And who would have access to Robobrain heads after all these years to build such a horrible creation?

Although Robobrains were designed to be capable of wielding two-handed firearms, and did so in previous Fallout games, they cannot do so in Fallout 4. Instead, in Fallout 4 they are limited to robot-specific weaponry. These cyborgs act as lieutenants of the Mechanist's robot army.



Robobrains are mentioned in Fallout 4[4] and appear in the Fallout 4 add-ons Automatron and Far Harbor.


  1. RobCo sales and service center acts as cover for the research below.
  2. Fallout: New Vegas loading screen hints: "The Robobrain, constructed by General Atomics International before the great nuclear war, is unique in that it uses an actual organic brain as its central processor."
  3. Automatron loading screen hints: "The Robobrain, constructed by General Atomics International before the Great War, is unique in that it uses an actual organic brain as its central processor."
  4. Robotics disposal ground terminals; Terminal, Delivery Log