Li is the foster daughter of Jack & Sarah. She was briefly Stewie Griffin's foster sister in "Love Thy Trophy". She is of Chinese descent, and thus believes the ethnicity of Santa Claus is also some sort of Asian. She has a brother of Hispanic descent, named Pablo, and other brothers from Inuit, Indian, Central or South American, and one of African descent. She sits third in their ethnicity rainbow.
Before that, she also appeared in "The King Is Dead" in the audience with Pablo at the performance of The King and I.