|Mary Kay Bergman|
|Birth Name:||Mary Kay Bergman|
|Birth Date:||5 June, 1961|
|Birth Place:||Los Angeles, California, USA|
|Death Date:||11 November, 1999|
Mary Kay Bergman, also known as as Shannen Cassidy, was an american voice actress who portrayed Batgirl in the 1997 film Batman & Mr. Freeze: SubZero. Bergman was an accomplished vocal actress having many well known roles including characters such as Disney's Snow White and Wendy Testaburger and various other female roles in South Park. She suffered from bipolar and generalized anxiety disorders, and committed suicide on November 11th, 1999.