Nightblades are a faction within the night elves. They fought alongside the demigod Cenarius against Grom Hellscream and the Warsong clan, and with the help of Cenarius they destroyed three Warsong bases; the Moonhunters, the Starseekers and the Shadowleaves established themselves in the destroyed bases. Cenarius then returned to his base and left the elves to attack the last base of the Warsong clan where Grom remained. However, they failed and were killed by the orcs.
Their color is teal (the same color used by Cenarius).