Mary Scheer (born March 19, 1963) is an American actress and comedian. She is best known as one of the original cast members of the sketch comedy series MADtv.
She is also well-known for playing Freddie's mother, Marissa Benson, on iCarly and its TV movies iGo to Japan and iParty with Victorious. She also voices Alice the zookeeper on The Penguins of Madagascar. She also voiced a machine and a female doctor on the show.
Previously with Nickelodeon, she voiced Suzie Kokoshka, resident of Sunset Arms with husband Oskar Kokoshka on Hey Arnold!.