Bill Foster

 is an elder inhabitant in Tranquility Lane in 2277.

Background
Bill Foster was one of the inhabitants in Vault 112, where he was put into the simulation Tranquility Lane by Stanislaus Braun, overseer of said vault.

Interactions with the player character
Bill Foster is one of the targets during the fourth step in the Tranquility Lane quest, where the goal is to kill everyone in the simulation.

Appearances
Bill Foster only appears in Fallout 3.