Ennis

The Ennis were a faction of an alien race in the Gamma Quadrant. They were led by Golin Shel-la.

Several hundred years ago, the Ennis began a long-running war with the Nol-Ennis on the planet Tevlin-De. The cause of the war was soon forgotten, some believing it to be over land or water. As a punishment for not being able to end the fighting and as a deterrent for the other factions on the planet, the Ennis and Nol-Ennis were exiled to a moon. As an additional punishment, Tevlin-De's leaders created nanite-like bio-mechanical microbes that resurrected people after death, forcing the Ennis and the Nol-Ennis into an eternal war. 

In 2369, Benjamin Sisko and Opaka Sulan were able to mediate a short cease fire between the two groups. 

Over several years, Opaka served as a negotiator between the Ennis and the Nol Ennis. In 2372, she mediated a cease fire that lasted several days. Although it did not endure, it marked the end of the fighting. The two factions were later united, becoming known as the Sen Ennis.