Zethresh

Zethresh
Gender	Male
Race	Naga
Affiliation	Queen Azshara (presumed)
Position	Warlord
Location	Unknown

Zethresh is a naga Warlord.

Rumors abound that a large naga force, under a warlord called Zethresh, hides near Crestfall's west shore. Zethresh reputedly seeks to cleanse the ocean and her isles of human encroachment. ^{(LoC 101)}

From...

BlizzPlanet World of Warcraft - Kul Tiras:

Crestfall isle has a community of fishers and boats, but aren't very amicable. The attacks of naga have incremented in the zone. A warlord Naga known as Zethresh hides within the western coast of Crestfall. South of Gilneas, Zul'Dare has been occupied by naga.