text: Kovacs reportedly disliked working in front of a live audience, as was the case with the shows he did for NBC during the 1950s. He found the presence of an audience distracting, and those in the seats frequently did not understand some of the more elaborate visual gags and special effects, which could only be appreciated by watching studio monitors instead of the stage.
  Like many comedians of the era, Kovacs created a rotation of recurring roles. In addition to the silent "Eugene," his most familiar characters were the fey, lisping poet Percy Dovetonsils, and the heavily accented German radio announcer, Wolfgang von Sauerbraten. Mr. Question Man, who answered viewer queries, was a satire on the long-run (1937–56) radio series, The Answer Man. Others included horror show host Auntie Gruesome, bumbling magician Matzoh Hepplewhite, Frenchman Pierre Ragout, and sardonic Hungarian cooking-show host Miklos Molnar. The Miklos character wasn't always confined to a kitchen; Kovacs performed a parody of The Howdy Doody Show with "Buffalo Miklos" as the host. Poet Percy Dovetonsils can be found playing Beethoven's Moonlight Sonata on a disappearing piano and as a "Master Detective" on the "Private Eye-Private Eye" presentation of the US Steel Hour on CBS March 8, 1961. On the same show, the Nairobi Trio abandons its instruments for a safe-cracking job; still with a background of "Solfeggio", but speaking, two of the three appear in an "Outer Space" sketch.
  Kovacs became a regular on NBC Radio's program Monitor beginning during late 1958, often using his Mr. Question Man character in his radio monologues.