Obsidian Order

The Obsidian Order was the Cardassian Union's intelligence agency.

Planets where bases of the Order are located

 * Cardassia Prime
 * Sariketegon

Known Agents

 * Elim Garak

Mirror universe

 * In Star Trek: New Empire, the Obsidian Order of the mirror universe played a fundamental role in the Klingon-Cardassian Alliance, until the Overlords destroyed the organization sometime prior to 2385.