Marcy Anderson is Tom Anderson's wife. Unlike her husband, she only appears in a few episodes of the show including "Good Credit," "Here Comes the Bride's Butt" and "Shopping Cart." She is a kindly elder woman. She is unaware of Beavis and Butt-head picking on Tom. In Beavis and Butt-Head Do America, she and Tom go on a road trip. She and Tom suffer the boys antics. At the end of the film, her husband is arrested and she's taken in to custody and she is given a full body cavity search.