One of the 6 classifications of Daeva (abominations) used by the Vigil. The Aessuri are those non-Ehoshim entities that are able to access the full power of the Ilios. These are almost always Aalevi, Humani or Urashi and they gain this ability either through exposure to an Elacite Crystal or by being the Nunnaki child of an Ehoshim. Not only do the Vigil consider both options an abomination, they consider these beings some of the most dangerous entities in the universe, especially since the Vigil themselves can no longer access the full power of the Ilios. Aessuri make up the majority of those imprisoned within Tantharos. A gathering of Aessuri is called a "Pantheon" and the discovery of any such gathering is enough for the Vigil to set out on a crusade.