Hagiography served as a Lesser Prophet on the Council in the Covenant. A paranoid, yet brilliant scientist (a dangerous combination), his primary responsibilities included the study of alien species; their culture, language, and even their genetic structure. Though it was thought by the UNSC that the Covenant never took prisoners, the reality was that some Human survivors were actually captured by Hagiography's troops to be experimented on. These experiments were done in secret, so as not to reveal the horrors of Hagiography's studies to the rest of the Covenant. Rumors began to abound, however, when Sangheili warriors began to question what went on behind the closed doors of Hagiography's labs. While Humans and Covenant assistants entered, no one but Hagiography and a few other San'Shyuun