Arleen Sorkin (October 14, 1955 – August 24, 2023) was an American actress, screenwriter, presenter and comedian. Sorkin was known for portraying Calliope Jones on the NBC daytime serial Days of Our Lives and for inspiring and voicing the DC Comics villain Harley Quinn in Batman: The Animated Series and the many animated series and video games that followed it. Description above from the Wikipedia article Arleen Sorkin, licensed under CC-BY-SA, full list of contributors on Wikipedia.