Star Trek Deep Space 9
Dukat, S.G. was a Cardassian military officer who served as Prefect of Bajor in the final years of the Bajoran Occupation. As the last person to hold the position, Dukat lost favor with Cardassian Central Command and fell into a downward spiral for several years. However, he became ruler of the Cardassian Union overnight, after he negotiated Cardassia‘s entry into the Dominion. Following his defeat in Operation Return and the death of his beloved daughter Ziyal, he suffered a complete mental breakdown and was captured by the Federation when it reclaimed space station Deep Space 9. He subsequently escaped and became a disciple of the Pah-wraiths. Along with Kai Winn Adami, he attempted to release the Pah-wraiths into the Bajoran wormhole. Dukat was imprisoned in the Fire Caves with the Pah-wraiths, after a fateful confrontation with the Emissary of the Prophets. (Star Trek: Deep Space Nine)
The Obsidian Order was the primary intelligence agency of the Cardassian Union. One of the most ruthless and efficient organizations in the quadrant, the Obsidian Order eclipsed even the Romulan Tal Shiar in intelligence gathering and covert operations. Almost all Cardassians lived in fear of the Obsidian Order, whose constant surveillance had led to the sudden eliminations of numerous “traitors”. It was said that the Order was so efficient that a Cardassian citizen couldn’t sit down to a meal without each dish being duly noted and recorded by the Order, down to its preparation and the exact measurement of each ingredient.