Rebek is noted for her short stature and powerful soprano voice, as well as a creative interpretation of Cardassian Guard dress regulations for female officers: she wears her braids in something of a coronet around her head, held together in the back by a pin bearing the sigil of her Order.
She is also one of the only people in the entire Cardassian Guard known to have mastered the use of the hunter array, an experimental master device controller / heads-up display combination introduced and quickly discontinued in the year 2367. Though she was not able to make the device serve in all capacities for which it was originally intended, worn by her it becomes a potent soldier's tool nonetheless. (The Thirteenth Order)
At some point during her basic training, something occurred between her and future gul Malyn Ocett that set off a feud that would continue throughout their careers. She also came to know another future gul, Tayben Berat while he was still a glinn or earlier. Whether or not they ever spoke of it is unknown, but Berat somehow became aware of her religious beliefs, though he kept this knowledge to himself. (The Thirteenth Order, "Those Who Remain," "A Stone's Throw Away")
Following basic, Rebek began her service in the ground forces as a member of the Sniper Corps. Even after reassignment to the space fleet, Rebek maintained her skills in this area and used them to aid her work in salvaging the hunter array for her use.
Before they could act, however, Rebek bore witness to the Septimus Massacre as gul of one of only three defending Cardassian vessels. Under the fierce Klingon assaults, the Romac lost shields. Rebek herself suffered severe burns down her back, and at the same time, the ship's Vorta was knocked into a coma. The leaderless Jem'Hadar went on a bloody rampage aboard her ship until engineer Serain Meray put a stop to it. The Romac itself only survived thanks to the sharp instincts of Rebek's counterpart aboard the Sherouk. (Star Trek: Sigils and Unions: The Thirteenth Order)
The Sherouk towed the Romac back to Lessek, and there she was one of the guls who issued the invitation to Starfleet lieutenant commander Makis Spirodopoulos to join their rebellion. Though she had misgivings about the extreme diversity of the Starfleet crew, with which her experience and training in the Cardassian Guard gave her little means to cope, she made an effort to suppress these misgivings.
Rebek was initially slated to remain with the Romac during the space portion of the battle. The effects of her experience at Septimus III, however, led her to conclude that her first officer, Glinn Va'Kust, would serve better in that capacity for the time. Instead, Rebek opted to take on her old role of sniper and join Macet, Speros, and Spirodopoulos in the ground battle. Much to Macet's surprise, she revealed her mastery of the hunter array and debuted her modified version of the array in battle. (The Thirteenth Order)