Rachel was a victim of the Holocaust.

While millions perished, Rachel was granted a second chance, and after her physical body was burned she rose as a shadow and witnessed the atrocities without being able to stop them. For months she went mad, becoming a wailing wraith which terrorised the Germans but was otherwise harmless.

After the War, Rachel assisted the War Tribunals, but it took years before she was able to connect with the world in any way. When the West Germans saw that she had the potential to be more than a shadow, they introduced her to Max Uber. Unfortunately, Rachel did not react well to the meeting and she attacked him, shrouding him in darkness and nearly killing him. When they emerged from the darkness, Rachel had faced some of her demons and decided that she should dedicate herself to stopping any future Holocausts, and that being a part of Uber Force may enable her to do that.

She has remained at Uber's side for more than four decades, and although her powers and concentration have waxed and waned over those years, she has been a constant presence on the team.

She is currently experiencing a strong period where she has more ability to interact with the world. She continues to hunt down Nazi War Criminals and has recently begun to uncover information about Kinder der Zukunft, which she believes may have been the reason she was kept from the afterlife. A part of her believes that she may now surrender her presence on Earth if she can somehow destroy der Kinder.

She has been somewhat driven ever since this idea.

Rachel died. She lost all memory of her past life, and has been forced to live as a shadow for more than sixty years. She finds it difficult to talk with modern people, especially young ones who tend to talk too quickly and have no respect. She does find some solace in the company of like-minded people, those who share her quest to uncover and expose War Criminals.

"Terrors you have not seen. Not until you have lived the life of a shadow for sixty years!"

Night is a ghost. She is immaterial and cannot be harmed, except by intense light which tends to dissipate her form. Over the years she has learned how to manipulate the world around her to an extent, but depending on her mental state and other distractions, such power comes and goes. At the moment she enjoys a strong sense of duty, to destroy der Kinder, so her abilities are a lot sharper.

Night is a shadow. Her body is a representation of what she believes she once looked like, although it is possible that it is nothing like it. She is usually attended by swirling wisps of shadow, and can sometimes vanish altogether in a shroud of pitch blackness.