Giles Wolstencroft was the assistant chief executive officer of the Vault-Tec Corporation before the Great War. The length of his term is unknown, and was already assistant CEO at sometime between 2064 and 2069. He was inspecting the construction site of Vault 76 alone when he was abducted by aliens. He tried to "bridge the communication gap" by talking to them, but ended up being either killed or knocked out by the aliens.