Big Wolf on Campus (1999) : 2x21

A transfer student comes to learn at the Pleasantville High School and Merton likes her, and Tommy tries to ask the girl to go with Merton, but she does not like Merton. When she found out that Tommy is a werewolf, she began to like Tommy. She was Medusa, a woman to turns people who crosses her into stone, and when she realizes that Tommy likes Lori, Medusa goes after her. Also Tommy finds Merton hugging Lori and gets mad. When Medusa is about to turn Tommy into stone Merton jumps in the way and is now a statue.