Freya

Freya is one of the watchers. She resided in the Temple of Life in the Storm Peaks until Loken rebelled against the other watchers. She has since then been corrupted by Yogg-Saron and is laying dormant inside the greenery of Ulduar. Freya left behind her avatar in Sholazar Basin to protect it from the Scourge as a fail safe if she were to be unavailable to the land.

Freya appears in World of Warcraft as an encounter in Ulduar. Once defeated, she will assist players during the Yogg-Saron encounter if summoned for assistance. During the battle against the old god, Freya will stand vigilantly in the corner of the prision inside an unreachable pillar, from there, she will increase the potency of the heroes' healing and provide sanity restoration wells.

Trivia
Freya's name is derived from the Norse goddess Freyja (also sometimes called Freja, Freya).