Mary Kay Bergman, also credited as Shannen Cassidy, was an American voice actress and voice-over teacher.
| Episode |
South Park Cartman Gets an Anal Probe: The Unaired and Uncut Original Pilot |
1970 |
| Episode |
Family Guy Let's Go to the Hop |
2000 |
| Episode |
Cow and Chicken Playin' Hookie |
1998 |
| Episode |
The Fairly OddParents Scout's Honor |
2000 |
| Episode |
The Fairly OddParents The Really Bad Day |
2000 |
| Episode |
Family Guy The Story on Page One |
2000 |
| Episode |
The Tick Evil Sits Down for a Moment |
1995 |
| Episode |
The Fairly OddParents Super Humor |
2001 |
| Episode |
Rugrats Uneasy Rider |
1998 |
| Episode |
Cow and Chicken Chicken Lips |
1998 |
| Episode |
Rugrats Where's Grandpa? |
1998 |
