Níðhöggr

Níðhöggr is a figure from Norse mythology, commonly depicted as a serpent or dragon. Its name is often translated as "malice-striker" or "he who strikes with malice." Níðhöggr is primarily associated with the roots of Yggdrasil, the world tree.

According to the Poetic Edda, Níðhöggr gnaws at the roots of Yggdrasil. This act is seen as a constant source of destruction and decay for the cosmic tree, which is central to the Norse cosmos. The serpent resides in Niflheim, one of the primordial realms, a place of darkness and cold.

The relationship between Níðhöggr and other inhabitants of Yggdrasil is complex. It is sometimes described as being in conflict with the eagle that sits at the top of the tree, with a squirrel named Ratatoskr acting as a messenger between them, carrying insults. This constant struggle at the roots reflects themes of cyclical destruction and renewal within Norse cosmology.

While often portrayed as a malevolent force, Níðhöggr's role is not solely negative. Its gnawing at the roots can also be interpreted as a natural process of decay that allows for new growth. Some sources suggest that Níðhöggr may survive the events of Ragnarök, the twilight of the gods, implying a persistent, enduring nature.