[center][b]Ksenia Solo[/b], former foster-child; CSI
[img]http://sciencefiction.com/wp-content/uploads/2012/03/lost-girl-ksenia-solo-4.jpg[/img][/center]Solo was born in Tomales Bay, north of San Francisco and she speaks with a Canadian accent. Her father was abusive, battering his wife and his children, until her schizophrenic mother killed him. Afterward, she spent time in the foster care system, which didn't keep her from graduating high school as valedictorian at age 16. She attended Harvard on a scholarship, moving on to graduate school at the University of California, Berkeley. Some time later, while she was working in San Francisco, her boss called her because he was in need of someone outside the Las Vegas team. Solo went to Las Vegas and helped resolve some Internal Affairs problems within the CSIs while also providing a replacement for a CSI, who had been shot. She became a permanent member of the Night Shift as a CSI Level 3 at the LVPD Criminalistics Bureau, specialising in Materials and Element Analysis. Ksenia is now married to her boss, but it is revealed that he had split up with her.

Perhaps because of her traumatic childhood, Solo has demonstrated compassion and empathy for victims of domestic violence. She also has a soft spot for animals, and became a vegetarian. She has also shown a tendency to become very aggressive when under pressure or annoyed, especially in cases involving abused women. In recent years, perhaps because of her mother's schizophrenia, Ksenia has been seen to work several cases with a mental health aspect. An example of this is when she was able to calm a schizphrenic son. 

In the early years after joining the team, Solo is depicted as a loner. Her hobbies are all work-related such as listening to her police scanner and reading forensic journals. She realizes how much she is missing out and decides to "get a life" outside of work. She dates a paramedic named Hank Pettigrew, but this casual relationship ends later when she discovered that he had a longtime girlfriend. Solo seems to be on a downward spiral as her memories of childhood resurface, with cases becoming more difficult for her emotionally.

Solo's romantic relationships have been largely unsuccessful. She had a college boyfriend, Ken Fuller, with whom she had an unsatisfactory relationship with whom had cheated on her. Laboratory technician Loki Laufeyson and fellow CSI Thor Odinson occasionally flirted with her, but there was nothing more than friendship from those flirtations. 

Loki makes no secret of his crush on Ksenia. She sometimes reciprocates romantic feelings for Loki. However, when the relationship between her and her boss was revealed, Loki was not bitter about her dating, and he continues to flirt with her. Loki tells Thor that he was aware of their relationship. When Ksenia was suspended because of a quarrel with another CSI, Loki was the one who defended her.