Jimmy (Vault 13)

 was the computer technician at Vault 13 in 2241.

Background
Jimmy's specialization was software, not hardware, so he was unable to fix the malfunctioning vault computer.

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

Appearances
Jimmy appears in Fallout 2.