Marianne Moore, played by Leslie Bega (of "Head of the Class" fame), is a character seen on Beverly Hills, 90210, the first series of the Beverly Hills, 90210 continuity. She appeared in the pilot episode, Class of Beverly Hills. Marianne Moore was a popular West Beverly Hills High School student who gave a party at her lush Beverly Hills home while her parents were away during the pilot episode. At this party, she meets Brandon Walsh, the new kid in town who didn't know anybody.