Neptulon

Neptulon the Tidehunter reigns supreme in his domain, the deep ocean. Users of boats and other such water-crossing utilities risk his wrath; entering his domain without express permission is tantamount to doom. He revels in taking those who feel invulnerable, especially Therazane's rocky beaches and the flames of Ragnaros, when given the chance. He rules over all water, whether it be the sea, the ocean, river or lake. All water elementals worship him, as do all creatures that use water or the cold for their abilities. It is said that when an intelligent creature drowns, his or her soul will pass through his realm on the way to its end. It is supposed that he keeps those souls which amuse and interest him, but Neptulon only laughs at such suppositions.

The Old Gods' armies were led by the powerful Elemental Lords: Ragnaros the Firelord, Therazane the Stonemother, Al'Akir the Windlord, and Neptulon the Tidehunter, who is the strongest of them all. Their chaotic forces raged across the face of the world and clashed with the colossal Titans. Though the elementals were powerful beyond mortal comprehension, their combined forces could not stop the mighty Titans. One by one, the elemental lords fell, and their forces dispersed.