The Cult of Saint Theris, housed in the city of Duirt in the Chapel of Saint Theris are a small faction of Eccles and holds the belief and quest of their patron Saint. The Cult is devoted to the killing of monsters that threaten people.

While most Ecclesian military organizations do not accept women in their ranks, the Cult of Saint Theris accept all comers. It is much less structured and organized then most other groups and relies more on individual capability of its members, who often form small groups of three or four to accomplish their objectives.