Diane is an American voice actress, singer, and writer. She began her singing career as a back-up singer for Johnny Mathis and went on to appear in the show group, The Establishment, on tour and on TV. As a writer, she has written for TV (The Love Boat, What's Happening Now), 19 romance novels, published film reviews for various small newspapers and Rotten Tomatoes, and is a member of Romance Writers of American and Mystery Writers of America and The Authors' Guild. As a voice actress, she is perhaps most well known for providing the voice of the villainess Poison Ivy on Batman: The Animated Series and its subsequent spin-offs. She has also lent her voice to series such as Inspector Gadget, Darkwing Duck, The New Adventures of Flash Gordon, The Centurions (as Crystal Kane), Dungeons & Dragons, She-Ra: Princess of Power and The Smurfs.