"They say a Kig Yar's allegiance can be bought for the right price; I think the UNSC hit that nail on the head."
―Anonymous Human politician
The Korzai Guild (KG), known colloquially as the Guild, is a prominent faction consisting primarily of Kig Yar and Unggoy.
Based on the desolate planet Sifr, the Guild was eventually assimilated by the UNSC Defense Force following the First Great War. Kig-Yar mercenaries under the Guild, many of whom had been left for dead by the crumbling Covenant, served alongside UNSC military personnel as supplemental combat forces.