Helgrotha was a female nephalem. She was dark and very beautiful (as were allegedly all nephalem), and protected the animals active during the night, presumably owls and other nocturnal creatures.
What is meant when it is said that she "watched" over those creatures isn't made clear. Perhaps she, much like Bul-Kathos, acted like a sort of deity. What powers she had is not known, but allegedly she was nearly as strong as Rathma when she lived. She was probably killed by Inarius after the angel had thrown out Lilith and altered the Worldstone to diminish the powers of the nephalem. Those of the nephalem who protested against that act were destroyed.
- Scales of the Serpent, page 128. Richard A. Knaak, 2007.
- The Veiled Prophet, page 6. Richard A. Knaak, 2007.