Cardassian prototype toby jug produced by Kevin Francis Ceramics of Stoke-on-Trent, England, circa 1995. The Cardassians are a fictional extraterrestrial species in the American science fiction franchise Star Trek. They were devised in 1991 for the series "Star Trek: The Next Generation" before being used in the subsequent series "Star Trek: Deep Space Nine" and "Star Trek: Voyager". In the series, set in the 24th century, the Cardassians are presented as living under a military government controlling the Cardassian Union, an interstellar empire occupying other planets, most notably Bajor. A Cardassian ship forms the handle of the jug.