|SPECIAL||5 ST, 5 PE, 5 EN, 2 CH, 5 IN, 5 AG, 5 LK (Stanislaus Braun)|
3 ST, 10 PE, 3 EN, 4 CH, 10 IN, 6 AG, 5 LK (Betty)
It's not fair... nobody to play with... ever again...
Doctor Stanislaus Braun is the Overseer of Vault 112, locked by his own choice in a virtual reality simulation in which he appears as a little girl named Betty. Before the Great War, he was a brilliant German Vault-Tec scientist, the head of Future-Tec and the creator of the Garden of Eden Creation Kit.
Born in the town of Kronach, Bavaria, Germany, Dr. Braun was the Director for Vault-Tec's Societal Preservation Program, and notes from other Vaults suggest that he was an outside point of contact for Overseers during the Vault Experiment, either as administrative authority or expert scientific adviser. Though early correspondence showed him taking a larger role in activation and assignment of the Vaults, much of his responsibility has lapsed as he has become more immersed in, and obsessed with, the sole administration of Vault 112's Virtual Reality experiment.
For the past two centuries, Braun has been repeatedly creating and exploring new simulated worlds such as "Toucan Lagoon" and "Slalom Chalet," but often becomes bored and began manipulating the simulations to impose cruelty on the other Vault Dwellers in the simulation, as an attempt to entertain himself. A failsafe terminal in Tranquility Lane shows that Braun commissioned the "Chinese Invasion Failsafe," a means of permanently killing the inhabitants of Vault 112, but (much to his disappointment) it will not kill him, which could leave him trapped alone in the simulation.
In the current simulation world of pre-War Tranquility Lane, Braun has taken up the identity of a little girl named "Betty" in another attempt to entertain himself - in the simulator he can be anything he wishes to be, and he happens to feel like trying out the form of a young girl. As "Betty", Braun speaks in the perfectly simulated voice of a real little girl but once he is revealed, he tends to alternate between the "Betty" voice and his real voice. Most of the residents of Tranquility Lane are unaware of Betty's nature, though a few are vaguely aware she's important and one child says "she's mean." The only person who seems to be aware of Betty's true nature is Old Lady Dithers.
When James approached him for assistance in retrieving the one usable G.E.C.K. in the Capital Wasteland, Braun trapped him in a simulator pod.
Braun has a tremendous ego, an inflated sense of his own intelligence, and anger problems. He lashes out over perceived sleights, believes that he is always right, and answers even simple questions with lengthy digressions.
 Interactions with the player character
 Interactions overview
- Tranquility Lane: Braun (aka Betty) is the man pulling the strings when the Lone Wanderer enters the Tranquility Lane lounger. He tasks the Wanderer with all sorts of malicious objectives, the pursuit of which nets a lot of bad karma. Activating the failsafe gives you good Karma for ending the torment of the residents in Vault 112. Doing every task of Betty's except the "Kill Everyone" task and activating the failsafe instead will result in neutral karma.
 Other interactions
- If the player attacks Betty in the simulation, even after completing the quest, Betty will say "You can't do that here, and now you have to pay," upon which the player is killed instantly.
- It is possible to see the sleeping body of the real Braun in a separate chamber in his office. It cannot be damaged or disabled. Even if the player decides to run the fail-safe and permanently kill the other residents of the Vault, thereby freeing them from his eternal torment, Braun notes that Vault-Tec failsafes prevent him from dying, perhaps forever.
- Pinkerton stole a memory chip from Braun, claiming in his terminal that it was like "stealing from a little girl".
Stanislaus Braun appears in Fallout 3.
 Behind the scenes
- In Jean-Luc Godard's 1965 film Alphaville, the movie's hero is sent on a mission to kill a Professor Von Braun - the creator of a super-computer in total control of the inhabitants of a dystopian city.
- In an interview with 1UP, Emil Pagliarulo revealed that Betty was partially inspired by the Twilight Zone episode "It's a Good Life" in which a small, willful child who was born with godlike powers annihilates the entire human race except for the adults in his small Ohio town, whom he keeps as his own personal playthings, tormenting, torturing, and killing them at will.