A med-tech from the planet Kaldor, Liv is smart, sarcastic, determined, stubborn and always ready to lend a helping hand. She has a hand of getting into tricky situations but always manages to get out of them, too, hoping to leave a place better than she found it. It is in her nature to put the wellbeing of others before her own.
Growing up feeling like she never belonged meant that she was eager to travel off-world, and did so by joining the space service. After a brief encounter with the Seventh Doctor, she became a companion of the Eighth Doctor when she met him again on Nixyce VII, a planet under Dalek occupation. She has been his companion ever since.