Kentar

Kentar was a Gul in Cardassian military after the events of the Dominion War and was the orchestrator of the Kentar Uprising.

Unsatisfied with the fate of the Cardassian Union, Kentar began a massive build up of military forces which struck the Federation during their incursion into the Delta Quadrant via a Transwarp portal to combat the Borg Collective. This endeavour made Starfleet vulnerable and would have resorted in their fleet being decimated by the Cardassian fleet if not for the protection of the Klingon Empire. While Federation was busy fighting the Borg, the Klingons began a war to stop the Union's war capability which included stopping the suppliers of Kentar's rebellion; the Romulan's.

The rebellion collapsed when both Cardassia and Kentar's stronghold in the Hurik system was invaded.

(Star Trek game: Armada II)