| Category | Heroes |
| Region | Aerie of Dragons |
| Race | Dragon (Apocalypse) |
| Gender | androgynous |
| Alignment | neutral |
| Deity | none |
| Born | 16 Dreamer 1454 DE |
| Died | 4 Bloom 1575 HE |
After building Sphere 411, the world known today as Bal-Kriav, Bruh Kreniik put a a number of dragons in a region he called Leret Dovah, the Aerie of Dragons. He planned to have these dragons serve as wards of the world he created, protecting it from the Chaos Lords that would soon come.
Nidhogg was an apocalypse dragon, an androgynous super-rare dragon type only called out to reduce a landscape to ruin. In the Creation War (1486 DE - 8777 DE), he sometimes allied with the Covenant. In the Demon Spawn War (8972 GE - 9493 GE), she served the Quarat'un Covenant for a while until Tiamat's fall from grace. Thereafter he served under Tiamat.
In the Third Dragon Wake (1575 HE - 1576 HE), awoken from a five thousand year slumber, Nidhogg went on a rampage, besieging the Zeymah'kein city Lumnaar Hok. This was a place built to defend against dragons, something Nidhogg did not anticipate. Nonethless, he would reduce the place to ruin, killing tens of thousands. Most were not killed directly by Nidhogg, but by its end - suffering innumerable hits, arrows, bolts from dragon ballista, magical attacks and a few blows from hand-held weapons Nidhogg fell. Her death unleashed fiery blood which came down like rain. This spread through the shattered city like tendrils then northwards, creating an area known today as Ag Krenok, the Burning Divide.