Vault 108

Vault 108 is one of the Vault-Tec Vaults. As part of the Vault Experiment it houses a cloning lab. In Fallout 3 the vault is full of hostile clones named Gary. In the Citadel Vault-Tec computer the premise of the experiment was explained to study conflict for leadership and power in a vault. The Vault Overseer was known to have terminal cancer and had a life expectancy of only a few years, and positions of authority in the Vault went undesignated and discretion given to the Overseer. The main power supply was also scheduled to burn out early, and the back-up power supply was intentionally insufficient to meet the Vault's needs. On top of all this, three times the normal armory stock was placed in the Vault. How the Gary clones factored into this is unknown.

All of the Gary clones only speak their own name, using different tones to express anger, curiosity, or pain. This is humorously akin to the way Pokemon monsters speak.

Appearances in games
This Vault appears in Fallout 3.

Behind the scenes
Vault 108 is a reference to a Warhammer 40k fan forum where two people named gary logged on at the same time and roleplayed as gaurdsmen, they just went with it and it became a meme. People joined in and it eventualy became a whole army of Garys and they were all part of the 108th regiment.