But Nidhogg isn't strictly a deity, and is noted for being one if the few to not die during Ragnarok. I take to likening Nidhogg as a representation of Entropy, a fundamental force of chaos and destruction that can't be fully stopped or killed, only slowed. I mean, he's known as the Gnawer of Yggdrasil, which is basically the symbol for the order of the universe, so I think my interpretation is valid for the most part.