Lasaran

Lasaran was a male Cardassian and a Glinn in the Cardassian military.

In 2374, Lasaran started to provide the Federation with Dominion military intelligence. A Vorta became suspicious and Lasaran was forced to contact Starfleet to arrange his defection from Cardassia. Lasaran had information on the number of Founders in the Alpha Quadrant and their current missions and locations. Worf and Jadzia Dax later attempted to reach Lasaran on Soukara, although Jadzia was injured by a Jem'Hadar attack. Worf chose to save Jadzia rather than make the rendezvous with Lasaran, who was later killed by the Dominion. 

In 2376, Kira Nerys was reluctant to send Julian Bashir and Ezri Dax on a mission together to Sindorin, due to the failed mission to save Lasaran two years earlier. 

T'lana learned of Lasaran's death and the intelligence he possessed while she was working for Starfleet Intelligence during the Dominion War. T'lana believed Worf should have rescued Lasaran at the expense of Jadzia's life.