Quote Originally Posted by Anonymoose View Post
It's been hinted for a long time that Nidhogg would return, and like Midgardsormr he is a king among their kind.
FCoB spoilers
Bahamut was a king among dragons too. And his lifeless yet regenerating body was still in the coils when Lou sent us into the burning heart. Death means nothing in Eorzea when wishes and crystals can create anything.