Unggoy (Earth-2130)

The unggoy (Monachus frigus, Latin for "cold monk"), are a sapient race of bipedal arthropods from the cold world of Balaho. They were part of the fragmented Covenant, occupying the lowest ranks, where they were mistreated by other races such as the sangheili, jiralhanae and kig-Yar.

History
The Librarian visited Balaho during the Forerunner-Flood War as a part of the Conservation Measure to save unggoy specimens by the Ecumene, and index them in the Ark so they could survive the activation of the Halo Array. After the rings were lighted and all life extinct, the unggoy, alongside all remaining living species in the galaxy, were returned to their homeworld via keyships, where they started rebuilding their culture.