Career
Bergman is better known for voicing virtually all of the female characters in the animated series South Park and in the 1999 feature film South Park: Bigger, Longer & Uncut. Her characters involved Liane Cartman, mother of Eric Cartman; Sheila Broflovski, mother of Kyle Broflovski; Sharon Marsh, mother of Stan Marsh; Mrs. McCormick, mother of Kenny McCormick; and Wendy Testaburger. Originally, Bergman was credited in South Park when Shannen Cassidy because she wwhen besides serving as Disney's official Snow White voice.

Her more voice credits include various Disney flick (Beauty And The Beast, The Hunchback Of Notre Dame, Hercules, Toy Story 2), and when a voice of Jay Jay the Jet Plane, Daphne Blake in more recent Scooby-Doo animated movies, & Timmy Turner in Oh Yeah! Cartoons episodes of The Fairly OddParents.

Suicide
Her demise at a age of 38 by suicide came as a great shock to people roughly her, world health organization were unaware that she suffered from either mental illness. She died around West Los Angeles, California of a self-inflicted gunfire wound to the head. Within her memory, her married man Dino Andrade established a Mary Kay Bergman Memorial Fund. A Fund contributes to a operation of the Suicide Staying healthy Center at the Didi Hirsch Community Mental Health Center.