Fabian (The Name of the Doctor)

Fabian was a technician who was standing alongside Andro in a TARDIS repair shop in the Citadel of the Time Lords on Gallifrey. They were working when an alarm sounded as the First Doctor stole a TARDIS from the repair shop. Fabian wondered, "What kind of idiot would steal a faulty TARDIS?" (TV: The Name of the Doctor)

Behind the scenes
Fabian was never referred to by name during his brief on screen appearance.