Kag Duzek was a male Cardassian who lived in the 24th century. In the 2370s, Duzek was a politician and was known to be Goran Tokar's successor.
In the year 2371, Duzek died, triggering turmoil on Cardassia as several individuals began campaigning to become Goran Tokar's heir. (DS9 novel: Valhalla)