The Trill are a humanoid species based on the planet Trill in the Alpha Quadrant in which a small percentage of the population harbors a sentient lifeform known as a symbiont inside their bodies, a symbiotic relationship that plays a significant role in Trill culture and society. Such "joined" Trill have personalities that are a synthesis of the two beings, and can access the memories and skills of previous hosts.

Personality: Unlike Vulcans or Klingons, Trill do not really

possess a stereotypical personality. As with Humans, their

personalities span the spectrum. Like most other

Federation members, they are generally optimistic, open to

new ideas, and willing to help those in need.

Physical Description: Trill have the same average height

and weight as Humans. Their skin tones range from pale

pink to olive, but no darker; their hair, on the other hand,

tends to be brown, black, or other dark shades. They have

two rows of dark brown spots running from their foreheads

down their bodies to their heels. Each Trill’s spots are as

distinctive to him as fingerprints are to a Human.

Example Names: Trill place the given name before the

family name. Joined Trill substitute the symbiont’s name for

the family name. First names: Curzon, Joran, Tobin, Nilani,

Emony, Ezri, Jadzia, Lenara. Symbiont names: Dax, Belar,

Pren, Tigan, Otner.