It’s hard to say where or when Nightmare was born, or what name she may have been given at birth. She doesn’t talk about her past much. What is known is that she was blessed and cursed by a god, and has become immortal.
Nightmare is human, with fair skin, white and silver hair, and black eyes. Her irises are black, so she appears to have no pupil at all.
She has worked for some time as an assassin, and is quite adept at her job. She is known to be a very talented mind-mage.
She is also insane.
During the Necromancer War, Nightmare fought along the forces in Lethu. In an attempt to prevent a command war-machine from self-destructing amid the ranks, she piloted it away, and was caught in the explosion.