Another contribution from Tea Drinker:
Jadzia Dax Star Trek: Deep Space Nine
Jadzia Dax is the Science Officer on the Federation station Deep Space Nine. She is also a joined Trill. Selected members of her species become hosts to symbiotic creatures who share their planet. The host and symbiont experience a complete merging of personalities and retain the memories and aspects of the personalities of all the previous hosts. Jadzia is the eighth host for the Dax symbiont. Her previous host, Curzon Dax, was the best friend and mentor of the Station’s commander, Benjamin Sisko, and the two remain close friends after the Dax symbiont is transferred to Jadzia.
Terry Farrell is great in a difficult role in which she has to convey complexity while maintaining a coherent character. She combines the exuberance of a young woman with the maturity of an older woman. She’s very professional; cool under pressure, wise, as well as being a brilliant scientist. She’s also one of the most playful Star Trek characters. Dax likes to party. She revels in relationships that the more buttoned-up characters find a bit incomprehensible, enjoying the company of Klingons and Ferengi along others. Her pursuit of the Klingon officer, Worf, is a delight as she cracks through his reserve (he’s by the far the more neurotic partner in their relationship). Dax and Worf marry during Season 6.
Unfortunately, Terry Farrell left the show at the end of Season 6 and was replaced by the inferior Ezri Dax (who the fans dubbed Ally McTrill), a more conventional character and a disappointingly sexist representation in general. But let’s not allow that to detract from the achievements of Jadzia Dax.
Sometimes I like it when the bad guy wins.