Kell Perim, a Trill female in
2375
Odan, a Trill male in
2367
For additional meanings of "Trill", please see Trill.
The
Trill (or
Trills) were a
humanoid species native to the
planet Trill. A small percentage of the Trill population co-existed with a sentient symbiotic organism known as a
symbiont inside their bodies. The resulting joined Trills had personalities which were a synthesis of the two beings including the memories, and to some extent the personalities, of the previous hosts of the symbiont. This way, the joined being gained all the skills and occupations of the previous hosts. As late as
2367, the fact that some Trills exist as a joined symbiotic species was widely unknown, even to
Federation scientists. (
TNG: "
The Host")