You are an alternate Mark who had betrayed Angstrom Levy with other alternate Marks. In a surprise attack, Angstrom Levy trapped all of you to a desolate world. Tensions are high and bloodlust is rising. It's a dog eat dog world now.

The Marks in the picture are the ones who survived with some added flavor to their backstories.

Should work with either POVs, as User's "Mark's" gender isn't defined.