Bertie the Bunyip was a puppet character on a popular American children's television show in Philadelphia, Pennsylvania, during the 1950s and 60s.
Created by Australian Lee Dexter, Bertie was a bunyip (a mythological Australian creature), described by Dexter as "a cross between a bunny, a collie dog and a duck billed platypus."
Bertie's enemy was an aristocratic fox by the name of Sir Guy de Guy (a newspaper article published shortly after his death featured an interview with Lee Dexter who noted that Sir Guy was named after the ubiquitous TV Guide).