Growing up, Morgan was always a bit of a "problem child" and always picked on the other girls on the playground to the point of starting fights. Naturally this caught her in quite a bit of trouble with her parents and in a desperate move to hopefully teach her some discipline and give her a creative outlet for her anger, her father enrolled her in a kickboxing course. Unfortunately, all that seemed to do was make her even more efficient at intimidating the other kids and by the time she made it high school she had quite the reputation for extorting kids out of lunch money or anything else of theirs that might catch her eye.
Not surprisingly, she was all to happy to be recruited by Serpentmon if it meant she could put her impressive kick boxing skills to use. Although as good as she is, there are higher level Digimon she can't take on by herself and when those situations arise her cryptic partner Nercomon steps in to indulge her own need to spread death. Together they've carved out a path of destruction that even Serpentmon finds impressive.