Jean Sincere “Sinny” Zambello (August 16, 1919 Mount Vernon, NY – April 3, 2013) was an American film, television, theater and voice actress. Her credits included the films Roxanne and The Incredibles, as well as recent roles in the television musical, Glee. Sincere provided the voice for Mrs. Hogenson in the 2004 Pixar film, The Incredibles, directed by Brad Bird. She was cast in a recurring role as the Librarian in the FOX series, Glee, in 2010 and 2011. Her last role was in a guest appearance as Gloria on the Nickelodeon series, iCarly, in November 2012.