Jimmy (Vault 13)

 was the computer technician at Vault 13 in 2241.

Background
However, his specialization was software, not hardware, so he is unable to fix the malfunctioning vault computer.

Interactions with the player character
He can also put the Mariposa Military Base on your map. Additionally, Jimmy briefly mentions the history of Vault 13, namely why the Overseer was replaced by a computer.

Appearances
Jimmy appears in Fallout 2. Like all of the other residents, Jimmy will be killed by the Enclave unless the Restoration Patch is installed and Dr. Schreber is killed within two weeks of entering Vault 13.