She enlists the duo's help when Stewart disappears (Stewart Is Missing), and she trusts them to take his homework to school for him when he is sick (The Great Cornholio). She believes that Beavis and Butt-head are good friends of her son, being oblivious to their antics and their negative influence on him. The duo pay her little respect or attention except in regard to her breasts. Beavis and Butthead always say "Hey Baby!"
In Leave It To Beavis Mrs. Stevenson played the mother of Beavis and the wife of Butt-head. In the end she and Todd (called Eddie in the story) have sex in the kitchen and Beavis and Butt-head don't even realize.
She is one of the few characters to have never appeared in Beavis and Butt-head Do America.
- Stewart's House
- The Great Cornholio
- Plate Frisbee
- Stewart Moves Away
- Stewart Is Missing
- Prank Call
- Take A Lap (mentioned)
- TV Violence
- Leave It To Beavis
- Beavis and Butt-head Do Christmas (heard, but not seen at the beginning of the second part of the episode)
Minor Characters: Hamid · Clark Cobb · Dave · Harry Sachz · Homeless Man · Madame Blavatsky · Redneck Lady · Crazy Farmer · Billy Bob · President Bill Clinton · Biker Lady · Marcy Anderson · School Nurse · Sterculius, the Roman God of Feces · St. Peter · Unnamed Police Officers