Mary Scheer, Jerry Trainor, and Miranda Cosgrove in iCarly (2007)

Mary Scheer and Jerry Trainor in iCarly (2007)

Cassandra Peterson, Scott Atkinson, Heather Hopper, Richard O'Brien, Mary Scheer, and Mary Jo Smith in Elvira's Haunted Hills (2001)

Mary Scheer, Peyton List, and Kevin Quinn in Bunk'd (2015)

Mary Scheer, Skai Jackson, and Nina Lu in Bunk'd (2015)

Mary Scheer, Peyton List, Karan Brar, and Kevin Quinn in Bunk'd (2015)

Mary Scheer and Kevin Quinn in Bunk'd (2015)

Mary Scheer and Peyton List in Bunk'd (2015)

Mary Scheer and Nate Stone in Bunk'd (2015)

Gabi Andronache, Richard O'Brien, and Mary Scheer in Elvira's Haunted Hills (2001)

Cassandra Peterson and Mary Scheer in Elvira's Haunted Hills (2001)

Mary Scheer in Elvira's Haunted Hills (2001)

Gabi Andronache, Scott Atkinson, Richard O'Brien, and Mary Scheer in Elvira's Haunted Hills (2001)

Gabi Andronache, Scott Atkinson, Mary Scheer, and Mary Jo Smith in Elvira's Haunted Hills (2001)