Nidhogg

Nidhogg is a mythological creature from Norse mythology, often depicted as a massive, serpent-like dragon that gnaws at the roots of the world tree, Yggdrasil. It symbolizes chaos, destruction, and the cycle of decay. In some legends, Nidhogg also preys upon the dead in Helheim, the realm of the dead. Its constant gnawing represents ongoing strife and the eventual end of the world, known as Ragnarok. Overall, Nidhogg embodies destructive forces and the inevitable decline that precedes renewal in Norse cosmology.