A Delphic Expanse people who revere the Makers of the spheres and were torn apart by a holy war between rival factions.
The Triannon are a humanoid species from the Delphic Expanse whose religion is centred on the Makers, the beings they believe created the spheres. A dispute over a detail of their creation beliefs split them into rival factions and led to a long and bloody holy war.
In Chosen Realm, Triannon zealots led by D'Jamat took control of Enterprise, intending to use the ship against their enemies. Archer regained control and took D'Jamat to his homeworld, where he found that the war had left his people devastated.