This is actually a former WoW character of mine, repurposed since I've quit the game but loved the character.

In life, she was involved in a lot of black sorcery, revolving around death and shadow and all sorts of unpleasantness. She died when a ritual went haywire, unleashing a lot of dark energy which nearly tore her apart. Her comrades decided to try and resurrect her, figuring that even if it was failed, resulting in her becoming a zombie, at least she would still be among them to lend her considerable power to their cause. The resurrection did not go as planned though, when the energy her body had absorbed lashed out at her former friends, twisting her into a banshee. Unaware of her surroundings, she was only aware of her own screams of pain as she was dragged not-so-kindly back to the realm of the living, or at least halfway there.

When she did finally wake, she was surrounded by the dead bodies of her old friends, destroyed by the terrible power of her newfound voice. At first she was revolted by what she had become, a husk of the woman she once had been, but soon she came to enjoy the power coursing through her, even though she had to quickly learn to control her voice so as to avoid any unfortunate accidents. While she is not the only banshee roaming Oscurita, she prefers to keep away from others, except her friend Gwenevier, a fellow banshee and an uncommonly kind spirit in comparison to those who have filled her life otherwise.