Crewman Bertram was a Human female who served in Starfleet's command division while assigned to Deep Space 9, under Captain Benjamin Sisko, during the early 2370s.

Bertram died in 2373, during a mission to the Gamma Quadrant planet Torga IV, when the runabout she was aboard was destroyed by a Jem'Hadar warship. (DS9: "The Ship")

Bertram was played by an unknown actress. The identity of this character was determined by the reference to her gender; she was the only unidentified female aboard the runabout that was not specifically identified.
Bertram was a late addition to the script, as Sisko's reference to her name was not at all mentioned in the 16 July 1996 revision of the final draft.