Covenant fringe

The Covenant fringe is a term regarding the collection of alien species scattered throughout the Orion Arm region of the Milky Way that were never completely integrated into the Covenant Hegemony. Many of these species have yet to be contacted and cataloged by humanity, as the San'Shyuum did not deign many worthy of trading service for salvation within their fleets and the Sangheili kept few records of civil affairs. Member species like the Yonhet were not considered full signatories to the Covenant due to their small population, but their talents and adherence to the Great Journey granted them a high degree of tolerance within the Covenant. The alien races of the fringe loyally provided various strategic and infrastructure-related advantages to the Covenant empire but never posed any military threat. Focusing their efforts to reconstruction and exploration at the end of the Human-Covenant War, the Office of Naval Intelligence and the UNSC began to gather the first bits of intelligence on the exact nature and size of the Fringe.

Trivia

 * In reference to regular questions about the Covenant fringe on the Halo Waypoint forums, 343 Industries' 2015 April Fools included the full list of species that made up the fringe: the Yonhet, the Glacius (Killer Instinct), the Locust (Gears of War), and the Piñata (Viva Piñata).
 * It is possible that the Sharquoi may have been part of the Fringe.

Gallery
 File:HE22 Yonhet.jpg|The Yonhet race hail from the moon Yonhe 

List of appearances

 * Halo: Escalation
 * Halo: Nightfall