In Star Trek: Deep Space Nine season 2, episode 22, "The Wire", it's revealed that Garak was a member of the Obsidian Order, the primary intelligence agency of the Cardassian Union. Originally ...
That trope is the Cardassian monologue, and it all started with the excellent Deep Space Nine episode "Duet." "Duet" is the episode where Major Kira must investigate a potential Cardassian war ...