Mehmet Burakgazi

Crewman Mehmet Burakgazi is a human colonist from the planet of Nivoch on the Federation side of the Demilitarized Zone. 

Burakgazi was among the Starfleet personnel taken prisoner by Cardassians in 2375 during the Dominion War and interned at the Lessek prisoner-of-war camp. As it turned out, however, these Cardassians were anti-Dominion rebels, and along with the ranking officer at the camp, Mike Spirodopoulos, Burakgazi became a member of a combined Cardassian-Starfleet rebel force, the Thirteenth Order.

As a member of the Thirteenth Order, Burakgazi was chosen for an infiltration team by Gul Macet, in large part due to his greater-than-average knowledge of Cardassian language and culture, which made him less of a liability in navigating the Cardassian shipyard. (--The Thirteenth Order)

Miscellanea
As a native of Nivoch, Burakgazi speaks Federation Standard with a strong DMZ borderworld dialect. This Cardăsda-influenced dialect means that sometimes he uses expressions with Cardassian origin or imposes Cardăsda sentence structure upon his Federation Standard, sometimes favoring a verb-first, subject-last syntax as a result. If this similarity were pointed out to him, however, he would be likely to find the mention of it offensive.