Betty Alexander Rizzo, known mononymously by her surname Rizzo is one of the main characters in the movie Grease. Tough and sarcastic leader of the Pink Ladies, she does not like to hang out with Sandy because Sandy is not tough enough. She smokes, drinks, and does not care what others think of her. Rizzo is also a girl with a "reputation". The girlfriend of Kenickie. In the 1978 movie, she is played by Stockard Channing.