Doctor Gilora Rejal was a Cardassian subspace researcher with the Cardassian Science Ministry sent to Deep Space 9 in 2371 to assist the Federation with their plans to install a subspace relay with which to communicate with the Gamma Quadrant. She was accompanied to the station by an academic associate, Ulani Belor, and an operative of the Obsidian Order, Dejar.

During her work on Deep Space Nine with Chief O'Brien, she was initially irritated by his offers and interest in helping with the modifications required for the project. She repeatedly dismissed him and insultingly questioned the modifications made to the station since the Bajoran Occupation. After being confronted by Chief O'Brien regarding what he perceived to be her speciesism towards the engineering competency of Humans, he was rebuffed upon discovering that her annoyance with him was not as a result of his species, but that he was male -- apparently the Cardassian male is stereotyped by his engineering incompetence. Rebuffed by Chief O'Brien, she discovered that this stereotype was not applicable to the Human male, especially upon learning of the Chief's position and observing his exceptional skill.

While working to complete the modifications at a later time, Gilora made advances on Chief O'Brien based on his confrontational attitude; her basis being the advances of the typical Cardassian male. Uncomfortable and bothered by her advances (particularly her offer to sire "many healthy children."), O'Brien related to her that he already has a healthy child ... and a wife. Embarrassed that she was misinterpreting his irritability as a result of a "cross-cultural misunderstanding", Gilora left O'Brien to finish the work alone.