Liv Rooney is a fictional character from the Disney Channel series Liv and Maddie. She is portrayed by actress Dove Cameron and is known for her cheerful personality and passion for acting. Liv is a former child star who returns to her hometown after starring in a successful television show. In the series, Liv navigates the challenges of re-adjusting to life with her family, including her twin sister Maddie Rooney, who is more focused on sports. The show explores themes of family, friendship, and the ups and downs of growing up in the spotlight.