Leo De Lyon (born 1926) is an Americanvoice actor famous for his role as Spook and Brain in the cartoon Top Cat. In the mid- and late 1970s he performed on stage as pianist and vocal entertainer and was musical director for several artists s.a. Sandler and Young. He co-starred with Bob Haymes and Dorothy Loudon in the short-lived DuMont Television Network sitcom It's a Business (March–May 1952). He appeared at the London Palladium in 1956 with the Platters and Lonnie Donegan. His specialty on this show was singing and whistling two different tunes at the same time. In 1962, he did a character voice on a recording of a song written by Al Lerner for a young artist named David Lucas for Doris Day and husband Marty Melcher's Arwin Records. The song was performed by Pookie and Hippy of The Soupy Sales Show. Leo did a fabulous "Guttural" hook "Uga Uga Boola, Uga Boola Boola Uga". He also voiced Flunkey the baboon in Disney's 1967's Jungle Book.
He also recorded a 45 rpm release (date unknown; probably early 1960s) for Musicor (distributed by United Artists), label number 1001, under Leo DeLyon and the Musclemen: "Sick Manny's Gym" (written by Alan Kooper)/ "Plunkin" (written by Alan Kooper and Eric Krackow). The Musclemen included Al Kooper on guitar and Eric Krackow on bass.