Mary is a staunch Conservative, so Conservative that she occasionally preaches Fascism. She's cheated on her husband with at least one person, the show's producer, whether it be alone with him or in a threesome with her husband. Mary often victimizes and verbally abuses her husband, a staunch Liberal, live on air because of his political views, which almost always differ from hers. At the end of one episode of I Say/You Say, she tells the listeners to support a Totalitarian state, implying that she is, indeed, Fascist.
- She may be named after the actress Mary Phillips.
- She also is a reflection (albeit exaggerated and lampooned) of Mary Matlin, the conservative political commentator and columnist who is similarly married to a more liberal activist, James Carville.