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 Heppelwhite, Frenchman Pierre Ragout, and Miklos Molnar, the sardonic Hungarian host of a cooking show. 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 their instruments for a safe cracking job; still with a background of "Solfeggio" but speaking, two of the three appear in an "Outer Space" sketch.