Sharon Valerii is a fictional character from the science fiction television series Battlestar Galactica. She is portrayed as a humanoid Cylon, a type of advanced robot designed to resemble humans. Sharon is known for her complex personality and struggles with her identity, often torn between her Cylon programming and her human emotions. In the series, Sharon serves as a pilot and is involved in key storylines that explore themes of loyalty, love, and betrayal. Her character is also referred to by the nickname "Boomer," which highlights her role as a skilled Viper pilot within the Galactica fleet.