One of the Hell's Belles, Vague was employed by Cyber. After being betrayed by Shrew and takeing refuge with X-Factor, the Belles sent Vague to spy on her. Wolfsbane was able to spot her, despite Vague being invisible, and Vague retreated to where her teammate Flambe was. However, she was eventually defeated and imprisoned.
After the events of Decimation, Vague was stripped of her powers.