Joret Dal

Joret Dal was a male Cardassian and a member of the Cardassian military in the 24th century.

In 2370, Dal became an operative for Starfleet and provided the crew of the USS Enterprise (NCC-1701-D) with intelligence about Cardassia's strategic intentions towards Bajor and other planets on their border with the Federation. In order to help Dal return safely to Cardassian space without arising suspicion, Sito Jaxa accompanied him by posing as a Bajoran he had captured. The Enterprise later intercepted a Cardassian report that stated a Bajoran prisoner had escaped her captor and had been killed. 

Dal himself also disappeared, with Jean-Luc Picard wondering if the truth about him had been discovered or if he was a double agent.