| Category | Races |
| Type | Chaos Archon (Ice) |
| Language | Primoridal |
| Native | Bal-Kriav, Fimbulwinter |
Created from the entropic energy and icy fields of Chaos, the Thrallrir served under primordial lords like Thyrm and Cari'phis. They were integral components of the primordial war machine that clashed against Covenant forces during the tumultuous Creation War, spanning the years 1486 DE to 8777 DE.
The opening of the Indraph Rift in 751 led to the influx of thousands of Thrallrir who settled in the Igas Region of Bal-Kriav.