Mindy Lee Sterling (born July 11, 1953) is an American actress and voice actress. Among her most prominent roles are Frau Farbissina in the Austin Powers series of comedy films, Principal Susan Skidmore on the Disney Channel series A.N.T. Farm, Ms. Endive in Chowder, Lin Beifong on The Legend of Korra, and Miss Briggs on iCarly.