Nidhoggr

Nidhoggr (ニーズホッグ, Niizuhoggu) is a recurring demon in the series.

History
Níðhöggr in Norse mythology is a creature that gnaws at the roots of the World Tree Yggdrasil. He lives beneath the roots of Yggdrasil and gnaws at them as they are the only thing that keeps it from the world. The squirrel Ratatoskr brings words of envy between Níðhöggr and the eagle Hresvelgr. The only person capable of controlling him is the Goddess Hel. Its existence is the portend of the Ragnarok that signals the end of all.

Appearances

 * Megami Tensei II: Kaijuu Clan
 * Shin Megami Tensei II : Jaryuu Clan
 * Shin Megami Tensei IV
 * Shin Megami Tensei: Strange Journey: Drake
 * Shin Megami Tensei IMAGINE: Evil Dragon Race
 * Majin Tensei II: Spiral Nemesis: Jaryuu Clan
 * Digital Devil Saga: Avatar Tuner
 * Digital Devil Saga: Avatar Tuner 2
 * Persona 3 FES : Aeon Arcana
 * Persona 4: Hermit Arcana
 * Devil Children Red Book
 * Devil Children Black Book
 * Devil Children White Book
 * DemiKids: Light Version: Nezhog
 * DemiKids: Dark Version: Nezhog
 * Devil Children Fire Book
 * Devil Children Ice Book
 * Devil Children Black Book/Red Book (PS)

Megami Tensei II
Nidhoggr appears as a optional boss in the Tower of Daedalus. Defeating him rewards the Devil Analyzer, which shows info about the last five demons that have been encountered.

Digital Devil Saga: Avatar Tuner
Nidhogg appears as a late-in game enemy in Digital Devil Saga: Avatar Tuner.