The Vault - Fallout Wiki

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The Vault - Fallout Wiki
Icon disambig.svg
For the character from Point Lookout, see Calvert (brain). For the Courier's brain in Old World Blues, see The Courier's brain.
The Brain
The Brain.png
Biography and appearance
RaceAlbino mole rat
AffiliationRenewal Cult
RoleCult Leader
FamilyKeeng Ra'at (brother)[1]
Dialogue FileGCBRAIN.MSG
QuestsOptimize the powerplant.
SPECIALStrength: 6
Perception: 8
Endurance: 5
Charisma: 2
Intelligence: 9
Agility: 7
Luck: 8
Derived StatsHit points: 80
Armor class: 22
Action points: 8
Carry weight: 175
Unarmed damage: 0
Melee damage: 4
Sequence: 16
Healing rate: 1
Experience points: 250
Normal DT/DR: 2/25%
Laser DT/DR: 0/20%
Fire DT/DR: 0/20%
Plasma DT/DR: 0/10%
Electrical DT/DR: 0/30%
EMP DT/DR: 0/500%
Explode DT/DR: 0/20%
Tag SkillsUnarmed: 100%
Throwing: 70%
Proto id00000106 (The Brain)

I don't have time for your pestering. I'm planning a way to take over the world. Go away.

Brain is a sentient albino mole rat residing in Gecko in Fallout 2.


This unique molerat is the brother of Keeng Ra'at.[1] Unlike his sibling, however, the unique mutation has resulted in a swollen cranium and a particularly interconnected brain, giving it excellent cognitive abilities. Adopting the name Brain (in testament to its mental capacity), this rat has founded the Renewal Cult. In exchange for their allegiance, ghouls are promised a chance to become "renewed". In non-cult words, this means that the Brain will use Vault City's medical facilities to attempt to make ghouls human again. To gain access, he seeks to form an alliance between the City and Gecko, as unlikely as it would seem.

Interactions with the player character

Interactions overview

This character starts quests.


Other interactions

  • Brain absolutely adores Cheezy Poofs and will demand the player to relinquish them if they carry any.

Notable quotes

  • "(musing to himself) So many things pass away. Times are not what they were. (sigh) I feel that my sole remaining kin has died. Mad, though he was, I wish it were not so. I had hoped that he might find some happiness even in his dotage. (to you) Well, enough of my sad musings."


Brain appears only in Fallout 2.

Behind the scenes


  1. 1.0 1.1 Brain: "{500}{}{(musing to himself) So many things pass away. Times are not what they were. (sigh) I feel that my sole remaining kin has died. Mad, though he was, I wish it were not so. I had hoped that he might find some happiness even in his dotage. (to you) Well, enough of my sad musings.}"
  2. Fallout Bible 5:
    "59c. The other question was about renewing. I had always killed the rat God before I got to necropolis. Now I know (as of about 3 days ago actually) that renewing was the term the ghouls used for becoming truly human again. (I had just asked what it was before and what the heck the ghouls meant.) Any further info on renewing would be much apreciated. (though I don't expect you to explain how to actually do it or anything it remained pretty vauge in fallout2 and I just couldn't find a way to get it to happen. Everytime I tried to optimise the plant Vault city would wipe out the ghouls. Was it actually doable or just a clever ruse from the brain to take over the world? (he never did in my games and i didn't have to do anything to stop him, like in the cartoon his plans fall apart on their own I suppose) Thanks for your time once again.
    It was not possible for the ghouls to "renew" in Fallout 2 - it was part of the Brain's plans to get them human again (under his control). It is possible to save Gecko and VC - one of the walkthroughs on the Fallout fan sites should have info on it.
    And here's what the Brain specifically has to say about Renewal:
    The Brain: Well as part of my plan to rule the world I intend to reward my Ghoul followers by finding a way to restore their humanity.
    Chosen One: How are you going to do that?
    The Brain: When I unite Gecko and Vault City under my rulership I will dedicate Vault City's medical labs to finding a way to reverse the effects of radiation that turned the people into Ghouls. They will be renewed, reborn, as humans once again.
    The Brain: In order to take over the world I have to make sure that there's something worth taking over. I need to build a strong powerbase using Gecko and Vault City.
    Chosen One: A rat plotting to take over the world?
    The Brain: Well, despite your feelings about a rodent ruling the world; the actions I propose would benefit thousands of Vault City and Gecko's citizens. You may not care for me or my motives but the results are still well worth working towards.
    Also, according to designer Matt Norton, "renew" was also a reference to the movie (and book) 'Logan's Run.'"