Star Trek: 10 Crazy Facts About The Trill
Trills are one of the most unique species in Star Trek, not to mention one of the strangest.
Throughout all of the movies, TV shows, books and more, hundreds of species have been introduced throughout the Star Trek universe. Some of them only appear once in a single episode, if at all sometimes as a species occasionally only gets mentioned in conversation. Then there are species that are integral to the ongoing story, like the Klingons or the Romulans.
Deep Space Nine brought in a variety of new species such as the Changelings and the Jem'Hadar. But DS9 also made good use out of a few secondary species from other series, giving them a new life and more backstory. The Ferengi are a great example of this as they were introduced on The Next Generation but came into their own on Deep Space Nine.
Trills are another such species. First appearing in a fourth season episode of The Next Generation, the species went on to become key to Deep Space Nine. Lieutenant Commander Jadzia Dax served as the station's Science Officer under Captain Benjamin Sisko.
The species is unique because they are, in some cases, actually two beings joined together. The process and it's impacts make Trills one of the most interesting species in the galaxy.
10. Might Not Be Part Of The Federation
At the core of every Star Trek series is some form of the United Federation of Planets. Based out of Earth, the Federation is an affiliation of planets and species working together to make the galaxy a fair and habitable space. In addition to Earth, founding member worlds included Vulcan, Alpha Centauri, Andor and Tellar.
Oddly enough, Trill might not actually be a member world.
Many of the Trills encountered primarily on Deep Space Nine are members of Starfleet or work for the Federation. But at no point is it every explicitly stated that Trill is a Federation member world. Star Trek usually makes a point of making sure that kind of detail is clear, so not saying it is a member likely means it isn't.
The fact that so many Trills serve in Starfleet or work for the Federation does not mean that Trill itself is a member world, either. You don't have to be from a Federation member world to enlist in Starfleet, with Nog the Ferengi being a prime example of that.