El-Aurian
El-Aurians (sometimes known as the Race of Listeners) are a humanoid race first introduced in the second season of Star Trek: The Next Generation with the character of Guinan. The species was named in the Star Trek: Deep Space Nine episode "Rivals". The villain in Star Trek: Generations, Dr. Tolian Soran, was an El-Aurian.
El-Aurians are physically similar to humans, but they can live well over 700 years and have a variety of racial types, with both dark and light skinned members of the race being shown on various Star Trek movies and television episodes. They are considered a race of listeners and often appear very patient and wise.
The El-Aurian homeworld was located in the Delta Quadrant and was assimilated by the Borg in the mid-23rd century. Very few survived, and those who did were scattered throughout the galaxy. Some of the refugees came to the United Federation of Planets and it has been noted that this is likely an analogy for the spread of Africans around the Earth via colonialism and slavery.
- El-Aurian at Memory Alpha (a Star Trek wiki)
Read more about this topic: Star Trek Species, E