Nin-gizhida
From DQWiki
An ancient dragon of the third generation, son of Ninazu and an unknown mother.
Nin-gizhida is a creature of the void or aether that surrounds worlds. His single, draconic form, is 60 leagues, (some 180 miles), from nose to tail, and he carries on his back several settlements and a city inhabited by Vanyarami.
He is the companion (and transport / mount, after a fashion) for his sister Ninlu, and her husband Dumuzi. His current whereabout are unknown, but he is expected back around Alusia is the near future.