I remember in the "Fairly Oddparents" segments on "Oh Yeah! Cartoons" back in 1998-2000, we never saw Timmy's parents' faces. But they seemed pretty much the same as they are in the regular series, down to the voices. Daran Norris's Dad voice was the same, which can be said compared to his original Cosmo voice. And in "The New Adventures of Winnie-the-Pooh," we often never saw adult faces.