Verinias

Verinias is a Highborne night elf that was transformed into Verinias the Twisted while about to leave Darkmist in Feralas.

Background
Sensiria was a Highborne night elf and member of the Shen'dralar when she was alive. Verinias loved her and together they lived in the city of Darkmist. However, Sensiria was "corrupted" by the demons of the Burning Legion and was changed into a succubus, unknown to the citizens of the city. Sensiria gifted what she called the glory of the Burning Legion upon Verinias, twisting him into Verinias the Twisted. Verinias anger with what she has done, trapped her in the ruins using the Darkmist Amulet and hoarded the Highborne souls for himself, as to prevent her from getting them in order to leave. They have been trapped here for over milennia.

Having tricked adventurers into killing Verinias, she has been freed and vowed to repay them someday.