Stanislaus Braun is a scientist that worked for Vault-Tec before the Great War, he is currently a resident of Vault 112. Braun is the man responsible for the Garden of Eden Creation Kit, he was also the director of the Societal Preservation Program which led thousands of American people into underground vaults. Braun can be found in a stasis pod in Vault 112, his body is 200 years old but his mind is being kept alive by a virtual reality simulation called Tranquility Lane which he created himself.
Braun was considered a genius in his generation but after 200 years within a simulation his mind had become sick and twisted. He would often put the other residents in the simulation through torture and death for his own entertainment, he would then reset them and start over.
Inside Tranquility Lane, Braun has changed his appearance to that of a young girl called Betty. He said that he was bored of his old identity and that he could be anything he wanted inside the simulation. The Lone Wanderer is forced to enter the simulation himself after his father entered to find out information on the G.E.C.K.. Braun imprisons you and your father inside the simulation and forces you to do his evil deeds in exchange for your release. You have the option of doing the tasks or executing the fail-safe found in the abandoned house. If you choose the fail-safe, everyone in Tranquility Lane will die, except Stanislaus Braun who will be trapped, alone within his own creation forever.