Catalog

"I do not judge. I record."

- Catalog

Catalog was a collective of Forerunner Juridical agents charged with recording, observing, and uploading information to the Juridical Network. There were many individuals identified as Catalog, but as a cultural convention, all were considered to be the same. Catalog were chosen from volunteering individuals of all rates who had committed crimes and assumed the role as an act of penance. Forerunners who would become Catalog were stripped of individuality and personhood and were referred to with the neutral pronoun "it". Catalog were mutated to a specialized form encased in a large carapace designed for optimum observation and recording, and allowing it to interview quickly and efficiently while contacting the network as often as necessary. This carapace was also capable of surviving in hard vacuum and other dangerous environmental conditions.

Near the end of the Forerunner-Flood war, Catalog collected testimony from a number of influential Forerunners; the Librarian, IsoDidact, Ur-Didact and Faber, in order to find evidence of possible crimes against the Mantle. Over a hundred thousand years after the activation of the Halo Array, the UNSC discovered and studied a Catalog designated as "Forerunner remains #879", recovering some of the records stored in its carapace and together with data from a Juridical monitor, piecing together an account of the final years of the Forerunner civilization.

List of appearances

 * Halo: Silentium

Behind the Scenes

 * Catalog's UNSC identifier of "Forerunner remains #879" implies that 878 other Forerunner corpses have been discovered by the UNSC.