Mary Jo Catlett (b. 1938) is an actress of stage and screen. Her most notable roles include Pearl Gallagher on Diff'rent Strokes and the voice of Mrs. Puff on SpongeBob SquarePants. Other notable screen work includes guest appearances on Glee, Desperate Housewives and M*A*S*H. She has also appeared on Broadway in Hello, Dolly! and The Pajama Game among others.

Catlett lent her voice to a number of animated segments for Sesame Street produced by ArtistMike, including Counselor Agnes in a Zork cartoon and narrating a segment about recycled mayonnaise jars.

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