In addition to Wilma, Jean also voiced the Flintstone characters Pebbles and Mrs. Slate. Much to her later regret, Jean was paid just $250 per episode and received a lump sum of $15,000 in lieu of syndication royalties. She was later a voice actor for seven of the characters in 'The Jetsons', including Rosie the robotic maid, and Mrs. Spacely.