Kristina was born to Viktor and Vanya Vasko. She has her mother's appearance but her eyes are green.
As a child, Kristina was loved by her parents whom she developed a closer bond with than with her father. She was greatly loved by her brother and sister. However, Kristina loved her cousins and brother just as much. She also cared deeply for her friends and the other attendees for Lackadaisy and Marigold. Kristina enjoys helping others and often acts as the voice of reason for her team.
As a teen, Kristina was a beautiful young lady who loved dressing nice and playing music. She always assisted her friends and family on alcohol runs.
As a young adult, Kristina became a gunman and the captain of the rumrunners for Marigold.
Kristina is a proper, professional and sensible individual, committed to her duties as a member of Lackadaisy. She has a rather pragmatic approach to combat and training which, when combined with her incredible talent in battle, leads her to numerous victories. Like her sister, Kristna speaks with a russian accent and is angered when people don't understand her.