From Wikipedia the free encyclopedia Eddie Deezen born March 6 1958 is an American character actor voice actor and comedian best known for his bit parts as nerd characters in 1970s and 1980s films such as Grease Grease 2 Midnight Madness 1941 and WarGames as well as for larger roles in a number of independent cult films including Surf II The End of the Trilogy and I Wanna Hold Your Hand As a voice actor he is easily recognizable for his distinctively highpitched and nasally voice most notably used for the characters of Mandark in the Cartoon Network series Dexters Laboratory Snipes the Magpie in RockADoodle Ned in Kim Possible and Lenny the KnowItAll in The Polar Express Description above from the Wikipedia article Eddie Deezen licensed under CCBYSA full list of contributors on Wikipedia