The Solari were a humanoid species native to the planet Solais V. In 2365, they requested the aid of the Federation mediator Riva, hoping to bring to an end a war that had lasted for fifteen centuries.
The negotiations were nearly a disaster. Riva's chorus, whom he used to communicate, were killed by a member of one of the Solari factions who was opposed to peace between the groups; the rogue Solari was subsequently killed by his comrade. However, in response to the murder of the chorus the away team beamed out along with Riva, making it seem that the fighting would continue and that no mediation or peace would occur. Eventually, Riva was convinced by counselor Deanna Troi to stay and try to mediate without his chorus, bringing the possibility of an end to their conflict. (TNG: "Loud As A Whisper")
- No Solari characters were ever assigned names in canon productions.